Was God using inches as a fraction of todays distance between those places or how it was 500 years ago ?
Good question.
An even better question is: are these chronologies supposed to be calculated by a lunar calendar (in use when these "prophecies" were recorded), of 360 days a year or by the solar calendar of 365 days a year. The modern Gregorian calendar (which we use) wasn't invented until the 17 th century, so the Bible timelines cannot possibly be correlated in stright line counting.
607 BCE does not lead to 1914- no matter how you count it.
