Madagascar is about 4.7 times bigger than North Carolina.

North Carolina is approximately 126,161 sq km, while Madagascar is approximately 587,041 sq km, making Madagascar 365% larger than North Carolina. Meanwhile, the population of North Carolina is ~9.5 million people (18.6 million more people live in Madagascar).
Tip: This to-scale comparison of North Carolina vs. Madagascar uses the Mercator projection, which distorts the size of regions near the poles.