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Finding the Fourth Proportional to 657,793.60, 907,755.15 and 355,987.60

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Solution

The fourth proportional to 657,793.60, 907,755.15 and 355,987.60 is: 491,262.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,793.60 : 907,755.15 = 355,987.60 : x
  2. Step 2: Convert to fraction form
    657,793.60/907,755.15 = 355,987.60/x
  3. Step 3: Cross multiply
    657,793.60x = 907,755.15 × 355,987.60
  4. Step 4: Simplify right side
    657,793.60x = 323,149,572,697.36
  5. Step 5: Solve for x
    x = 323,149,572,697.36/657,793.60
  6. Step 6: Final answer
    x = 491,262.88

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1.5x scale

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.