Finding the Fourth Proportional to 516,117.68, 712,224.12 and 289,772.72
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Solution
The fourth proportional to 516,117.68, 712,224.12 and 289,772.72 is: 399,876.09
Step by Step Solution
- Step 1: Write the proportion equation
516,117.68 : 712,224.12 = 289,772.72 : x - Step 2: Convert to fraction form
516,117.68/712,224.12 = 289,772.72/x - Step 3: Cross multiply
516,117.68x = 712,224.12 × 289,772.72 - Step 4: Simplify right side
516,117.68x = 206,383,120,502.01 - Step 5: Solve for x
x = 206,383,120,502.01/516,117.68 - Step 6: Final answer
x = 399,876.09
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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.