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Finding the Fourth Proportional to 11,988,793.38, 17,978,456.43 and 4,798,987.14

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Solution

The fourth proportional to 11,988,793.38, 17,978,456.43 and 4,798,987.14 is: 7,196,585.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988,793.38 : 17,978,456.43 = 4,798,987.14 : x
  2. Step 2: Convert to fraction form
    11,988,793.38/17,978,456.43 = 4,798,987.14/x
  3. Step 3: Cross multiply
    11,988,793.38x = 17,978,456.43 × 4,798,987.14
  4. Step 4: Simplify right side
    11,988,793.38x = 86,278,381,204,620.30
  5. Step 5: Solve for x
    x = 86,278,381,204,620.30/11,988,793.38
  6. Step 6: Final answer
    x = 7,196,585.88

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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.