Netherlands is about 1.4 times bigger than Solomon Islands.

Solomon Islands is approximately 28,896 sq km, while Netherlands is approximately 41,543 sq km, making Netherlands 44% larger than Solomon Islands. Meanwhile, the population of Solomon Islands is ~702,694 people (16.7 million more people live in Netherlands).
Tip: This to-scale comparison of Solomon Islands vs. Netherlands uses the Mercator projection, which distorts the size of regions near the poles.