Western Australia (Australia) is 7.7 times larger than Malaysia.
Area: 329,847 km2 World Factbook
Population: 30,073,353 (July 2014) World Factbook
Malaysia is a federal constitutional monarchy located in Southeast Asia. It consists of thirteen states and three federal territories and has a total landmass of 329,847 square kilometres separated by the South China Sea into two similarly sized regions, Peninsular Malaysia and East Malaysia. Wikipedia
Western Australia is a state occupying the entire western third of Australia. It is bounded by the Indian Ocean to the north and west, the Great Australian Bight and Southern Ocean to the south, the Northern Territory to the north-east and South Australia to the south-east. Wikipedia