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Finding the Fourth Proportional to 659,117.80, 988,676.70 and 491,156.20

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Solution

The fourth proportional to 659,117.80, 988,676.70 and 491,156.20 is: 736,734.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,117.80 : 988,676.70 = 491,156.20 : x
  2. Step 2: Convert to fraction form
    659,117.80/988,676.70 = 491,156.20/x
  3. Step 3: Cross multiply
    659,117.80x = 988,676.70 × 491,156.20
  4. Step 4: Simplify right side
    659,117.80x = 485,594,691,000.54
  5. Step 5: Solve for x
    x = 485,594,691,000.54/659,117.80
  6. Step 6: Final answer
    x = 736,734.30

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.