Finding the Fourth Proportional to 409,688,138.60, 614,532,207.90 and 402,885,693.80
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Solution
The fourth proportional to 409,688,138.60, 614,532,207.90 and 402,885,693.80 is: 604,328,540.70
Step by Step Solution
- Step 1: Write the proportion equation
409,688,138.60 : 614,532,207.90 = 402,885,693.80 : x - Step 2: Convert to fraction form
409,688,138.60/614,532,207.90 = 402,885,693.80/x - Step 3: Cross multiply
409,688,138.60x = 614,532,207.90 × 402,885,693.80 - Step 4: Simplify right side
409,688,138.60x = 247,586,234,942,237,344 - Step 5: Solve for x
x = 247,586,234,942,237,344/409,688,138.60 - Step 6: Final answer
x = 604,328,540.70
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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.