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Finding the Fourth Proportional to 679,996, 1,019,987.92 and 253,517.33

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Solution

The fourth proportional to 679,996, 1,019,987.92 and 253,517.33 is: 380,273.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,996 : 1,019,987.92 = 253,517.33 : x
  2. Step 2: Convert to fraction form
    679,996/1,019,987.92 = 253,517.33/x
  3. Step 3: Cross multiply
    679,996x = 1,019,987.92 × 253,517.33
  4. Step 4: Simplify right side
    679,996x = 258,584,614,110.65
  5. Step 5: Solve for x
    x = 258,584,614,110.65/679,996
  6. Step 6: Final answer
    x = 380,273.73

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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.