another stepper scaling question

Hello:

I have a different stepper scaling question . I don'tknow what kind of
software I'll be running, probably something from Compumotor because I have
one of their 2-axis indexer/controllers.

Anyway, my question is generic -

If I have one axis that has to move proportionally to another, say perhaps
analogous to how I imagine screws might be cut...actually that's a good
analogy, because my application has to move the pitch of one leadscrew
relative to the rotation of a shaft.

My thought is that if I have a 200 step motor on the rotating shaft, and a
Gecko 201 (1/10 ustep), I have 2000 steps per rev. The other axis has a 5
pitch (0.2 inch) leadscrew, so each motor rotation moves 0.2" or 0.2/200 =
0.001" per step.

So the question is - suppose I want a particular rate of motion on the
linear axis (lead screw). I imagine I could multiply two factors to come up
with a least common denominator then divide the pulse/rate info for each
axis by the respective factor from the other axis.

I don't know if I'm making any sense, but I hope someone either agrees or
straightens me out.

Thanks

Murray