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Finding the Fourth Proportional to 8,691,346.20, 13,037,019.30 and 5,098,834.20

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Solution

The fourth proportional to 8,691,346.20, 13,037,019.30 and 5,098,834.20 is: 7,648,251.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691,346.20 : 13,037,019.30 = 5,098,834.20 : x
  2. Step 2: Convert to fraction form
    8,691,346.20/13,037,019.30 = 5,098,834.20/x
  3. Step 3: Cross multiply
    8,691,346.20x = 13,037,019.30 × 5,098,834.20
  4. Step 4: Simplify right side
    8,691,346.20x = 66,473,599,872,900.06
  5. Step 5: Solve for x
    x = 66,473,599,872,900.06/8,691,346.20
  6. Step 6: Final answer
    x = 7,648,251.30

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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.