Finding the Fourth Proportional to 520,665.95, 781,721.72 and 268,126.99
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Solution
The fourth proportional to 520,665.95, 781,721.72 and 268,126.99 is: 402,562.70
Step by Step Solution
- Step 1: Write the proportion equation
520,665.95 : 781,721.72 = 268,126.99 : x - Step 2: Convert to fraction form
520,665.95/781,721.72 = 268,126.99/x - Step 3: Cross multiply
520,665.95x = 781,721.72 × 268,126.99 - Step 4: Simplify right side
520,665.95x = 209,600,689,511.76 - Step 5: Solve for x
x = 209,600,689,511.76/520,665.95 - Step 6: Final answer
x = 402,562.70
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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.