Finding the Fourth Proportional to 515,689.91, 711,576.20 and 286,248.95
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Solution
The fourth proportional to 515,689.91, 711,576.20 and 286,248.95 is: 394,981.43
Step by Step Solution
- Step 1: Write the proportion equation
515,689.91 : 711,576.20 = 286,248.95 : x - Step 2: Convert to fraction form
515,689.91/711,576.20 = 286,248.95/x - Step 3: Cross multiply
515,689.91x = 711,576.20 × 286,248.95 - Step 4: Simplify right side
515,689.91x = 203,687,939,921.14 - Step 5: Solve for x
x = 203,687,939,921.14/515,689.91 - Step 6: Final answer
x = 394,981.43
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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.