Finding the Fourth Proportional to 616,560.60, 923,966.10 and 455,378.70
Calculator
Solution
The fourth proportional to 616,560.60, 923,966.10 and 455,378.70 is: 682,421.94
Step by Step Solution
- Step 1: Write the proportion equation
616,560.60 : 923,966.10 = 455,378.70 : x - Step 2: Convert to fraction form
616,560.60/923,966.10 = 455,378.70/x - Step 3: Cross multiply
616,560.60x = 923,966.10 × 455,378.70 - Step 4: Simplify right side
616,560.60x = 420,754,481,462.07 - Step 5: Solve for x
x = 420,754,481,462.07/616,560.60 - Step 6: Final answer
x = 682,421.94
Related Problems
Find fourth proportional to 308,280.30, 461,983.05 and 227,689.35
Half scale
Find fourth proportional to 1,233,121.20, 1,847,932.20 and 910,757.40
Double scale
Find fourth proportional to 616,561.60, 923,967.60 and 455,379.70
Similar ratio
Find fourth proportional to 924,840.90, 1,385,949.15 and 683,068.05
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.