Home / 627,654,342.60-865,802,310.66-392,296,543.56

Finding the Fourth Proportional to 627,654,342.60, 865,802,310.66 and 392,296,543.56

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Solution

The fourth proportional to 627,654,342.60, 865,802,310.66 and 392,296,543.56 is: 541,143,796.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,654,342.60 : 865,802,310.66 = 392,296,543.56 : x
  2. Step 2: Convert to fraction form
    627,654,342.60/865,802,310.66 = 392,296,543.56/x
  3. Step 3: Cross multiply
    627,654,342.60x = 865,802,310.66 × 392,296,543.56
  4. Step 4: Simplify right side
    627,654,342.60x = 339,651,253,878,179,328
  5. Step 5: Solve for x
    x = 339,651,253,878,179,328/627,654,342.60
  6. Step 6: Final answer
    x = 541,143,796.55

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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.