Here's why:
* The magnitude scale works in reverse: Lower magnitudes indicate brighter stars.
* The difference in magnitude: The difference in magnitude between the two stars is 1.4 (4.6 - 3.2 = 1.4). This means the star with a magnitude of 3.2 is about 2.5 times brighter than the star with a magnitude of 4.6 (each magnitude step represents a brightness difference of about 2.5).
