Micronesia, Federated States of is about 419 times smaller than Arizona.

Arizona is approximately 294,312 sq km, while Micronesia, Federated States of is approximately 702 sq km, making Micronesia, Federated States of 0.24% the size of Arizona. Meanwhile, the population of Arizona is ~6.4 million people (6.3 million fewer people live in Micronesia, Federated States of).
Tip: This to-scale comparison of Arizona vs. Micronesia, Federated States of uses the Mercator projection, which distorts the size of regions near the poles.