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Finding the Fourth Proportional to 9,981,001.20, 14,978,500.20 and 4,305,298.80

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Solution

The fourth proportional to 9,981,001.20, 14,978,500.20 and 4,305,298.80 is: 6,460,966.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,981,001.20 : 14,978,500.20 = 4,305,298.80 : x
  2. Step 2: Convert to fraction form
    9,981,001.20/14,978,500.20 = 4,305,298.80/x
  3. Step 3: Cross multiply
    9,981,001.20x = 14,978,500.20 × 4,305,298.80
  4. Step 4: Simplify right side
    9,981,001.20x = 64,486,918,936,859.76
  5. Step 5: Solve for x
    x = 64,486,918,936,859.76/9,981,001.20
  6. Step 6: Final answer
    x = 6,460,966.96

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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.