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Finding the Fourth Proportional to 8,522,970.92, 12,786,345.47 and 2,457,229.28

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Solution

The fourth proportional to 8,522,970.92, 12,786,345.47 and 2,457,229.28 is: 3,686,388.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,522,970.92 : 12,786,345.47 = 2,457,229.28 : x
  2. Step 2: Convert to fraction form
    8,522,970.92/12,786,345.47 = 2,457,229.28/x
  3. Step 3: Cross multiply
    8,522,970.92x = 12,786,345.47 × 2,457,229.28
  4. Step 4: Simplify right side
    8,522,970.92x = 31,418,982,396,861.48
  5. Step 5: Solve for x
    x = 31,418,982,396,861.48/8,522,970.92
  6. Step 6: Final answer
    x = 3,686,388.55

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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.