[Elrond Jr]

Hmm.... good question, except that they wouldn't make it even if everyone didn't die, etc. The whole point was that humans are totally corrupt and cannot handle to be so close to that kind of power and not try and take it. The entire fellowship would be tempted beyond belief and one of them would have taken the ring for sure. However if they weren't tempted anymore and remained together, then i doubt any force could stop them. With their fighting prowess and Gandalf's incredible power (Wizard, the most powerful of the istari, and Narya). But, Gandalf never fall at Moria then he'd never be the "White".