Finding the Fourth Proportional to 642,363.78, 886,877.98 and 413,024.06
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Solution
The fourth proportional to 642,363.78, 886,877.98 and 413,024.06 is: 570,240.66
Step by Step Solution
- Step 1: Write the proportion equation
642,363.78 : 886,877.98 = 413,024.06 : x - Step 2: Convert to fraction form
642,363.78/886,877.98 = 413,024.06/x - Step 3: Cross multiply
642,363.78x = 886,877.98 × 413,024.06 - Step 4: Simplify right side
642,363.78x = 366,301,944,024.20 - Step 5: Solve for x
x = 366,301,944,024.20/642,363.78 - Step 6: Final answer
x = 570,240.66
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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.