Nevada is about 1.6 times bigger than North Dakota.

North Dakota is approximately 178,647 sq km, while Nevada is approximately 284,448 sq km, making Nevada 59% larger than North Dakota. Meanwhile, the population of North Dakota is ~672,591 people (2.0 million more people live in Nevada).
Tip: This to-scale comparison of North Dakota vs. Nevada uses the Mercator projection, which distorts the size of regions near the poles.