I used to program in Fortran years ago, but I really forget it all now. As I remember, I could be wrong, BASIC wasn't really all that similar to Fortran.
One of the things that stuck out about Fortran, as I remember, was that the way it allocates memory was basically the reverse of Pascal. I really didn't like Pascal, and loved Fortran.
I remember a few years ago talking with a fellow working in defense. He was doing work on the battle/war simulators for the US/Korean defense against North Korea, and he worked in Fortran for it.