Saint Vincent and the Grenadines is about 757 times smaller than Arizona.

Arizona is approximately 294,312 sq km, while Saint Vincent and the Grenadines is approximately 389 sq km, making Saint Vincent and the Grenadines 0.13% the size of Arizona. Meanwhile, the population of Arizona is ~6.4 million people (6.3 million fewer people live in Saint Vincent and the Grenadines).
Tip: This to-scale comparison of Arizona vs. Saint Vincent and the Grenadines uses the Mercator projection, which distorts the size of regions near the poles.