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Finding the Fourth Proportional to 687,310.56, 948,177.84 and 445,654.32

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Solution

The fourth proportional to 687,310.56, 948,177.84 and 445,654.32 is: 614,801.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,310.56 : 948,177.84 = 445,654.32 : x
  2. Step 2: Convert to fraction form
    687,310.56/948,177.84 = 445,654.32/x
  3. Step 3: Cross multiply
    687,310.56x = 948,177.84 × 445,654.32
  4. Step 4: Simplify right side
    687,310.56x = 422,559,550,524.27
  5. Step 5: Solve for x
    x = 422,559,550,524.27/687,310.56
  6. Step 6: Final answer
    x = 614,801.48

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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.