Fort Worth, Texas is 3.8 times larger than Waco, Texas.
Area: 1,011 km2 calculated
Fort Worth is the 17th-largest city in the United States of America and the fifth-largest city in the state of Texas. Wikipedia
Area: 266 km2 calculated
Waco is a city which is the county seat of McLennan County, Texas, United States. It is situated along the Brazos River and I-35, halfway between Dallas and Austin. The city had a 2010 population of 124,805, making it the twenty-second most populous city in the state. Wikipedia