Western Australia (Australia) is 1,073 times larger than Australian Capital Territory (Australia).
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
Australian Capital Territory is a territory in the south east of Australia, enclaved within New South Wales. It is the smaller of the two self-governing internal territories in Australia. The only city and by far the most populous community is Canberra, the capital city of Australia. Wikipedia