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Finding the Fourth Proportional to 657,793.87, 907,753.75 and 355,987.87

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Solution

The fourth proportional to 657,793.87, 907,753.75 and 355,987.87 is: 491,262.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,793.87 : 907,753.75 = 355,987.87 : x
  2. Step 2: Convert to fraction form
    657,793.87/907,753.75 = 355,987.87/x
  3. Step 3: Cross multiply
    657,793.87x = 907,753.75 × 355,987.87
  4. Step 4: Simplify right side
    657,793.87x = 323,149,323,947.01
  5. Step 5: Solve for x
    x = 323,149,323,947.01/657,793.87
  6. Step 6: Final answer
    x = 491,262.29

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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.