How can one use the Bible to determine if the beast with seven heads and ten horns is the G-7 nations plus three more?

In Revelation, there are several references to the beast with seven heads and ten horns rising to world power. >Rev. 12:3 And there appeared another wonder in heaven; and behold a great red dragon, having seven heads and ten horns, and seven crowns upon his heads. >Rev. 13:1 And I stood upon the sand of the sea, and saw a beast rise up out of the sea, having seven heads and ten horns, and upon his horns ten crowns, and upon his heads the name of blasphemy. >Rev. 17:3 So he carried me away in the spirit into the wilderness: and I saw a woman sit upon a scarlet coloured beast, full of names of blasphemy, having seven heads and ten horns. >Rev. 17:7 And the angel said unto me, Wherefore didst thou marvel? I will tell thee the mystery of the woman, and of the beast that carrieth her, which hath the seven heads and ten horns. How can a Bible reader determine if the seven heads refer to the G-7 seven nations? And the three extra horns could be when Russia, India, and China join them? https://history.stackexchange.com/questions/1786/why-canada-failed-to-emerge-as-a-power-like-uk-or-france/7741#7741 **Note:** This is the revised version of a previously closed question. The original version was in the format, "Is it true that...?" This version is, "how can one determine if it is true that...?