Finding the Fourth Proportional to 508,909.20, 763,363.80 and 430,177.20
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Solution
The fourth proportional to 508,909.20, 763,363.80 and 430,177.20 is: 645,265.80
Step by Step Solution
- Step 1: Write the proportion equation
508,909.20 : 763,363.80 = 430,177.20 : x - Step 2: Convert to fraction form
508,909.20/763,363.80 = 430,177.20/x - Step 3: Cross multiply
508,909.20x = 763,363.80 × 430,177.20 - Step 4: Simplify right side
508,909.20x = 328,381,702,065.36 - Step 5: Solve for x
x = 328,381,702,065.36/508,909.20 - Step 6: Final answer
x = 645,265.80
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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.