Finding the Fourth Proportional to 627,654,342.10, 865,802,309.97 and 392,296,543.06
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Solution
The fourth proportional to 627,654,342.10, 865,802,309.97 and 392,296,543.06 is: 541,143,795.86
Step by Step Solution
- Step 1: Write the proportion equation
627,654,342.10 : 865,802,309.97 = 392,296,543.06 : x - Step 2: Convert to fraction form
627,654,342.10/865,802,309.97 = 392,296,543.06/x - Step 3: Cross multiply
627,654,342.10x = 865,802,309.97 × 392,296,543.06 - Step 4: Simplify right side
627,654,342.10x = 339,651,253,174,593,600 - Step 5: Solve for x
x = 339,651,253,174,593,600/627,654,342.10 - Step 6: Final answer
x = 541,143,795.86
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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.