Finding the Fourth Proportional to 529,687.56, 730,971.74 and 311,905.68
Calculator
Solution
The fourth proportional to 529,687.56, 730,971.74 and 311,905.68 is: 430,431.55
Step by Step Solution
- Step 1: Write the proportion equation
529,687.56 : 730,971.74 = 311,905.68 : x - Step 2: Convert to fraction form
529,687.56/730,971.74 = 311,905.68/x - Step 3: Cross multiply
529,687.56x = 730,971.74 × 311,905.68 - Step 4: Simplify right side
529,687.56x = 227,994,237,625.48 - Step 5: Solve for x
x = 227,994,237,625.48/529,687.56 - Step 6: Final answer
x = 430,431.55
Related Problems
Find fourth proportional to 264,843.78, 365,485.87 and 155,952.84
Half scale
Find fourth proportional to 1,059,375.12, 1,461,943.48 and 623,811.36
Double scale
Find fourth proportional to 529,688.56, 730,973.12 and 311,906.68
Similar ratio
Find fourth proportional to 794,531.34, 1,096,457.61 and 467,858.52
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.