Home / 591,451.76-815,918.91-387,414.38

Finding the Fourth Proportional to 591,451.76, 815,918.91 and 387,414.38

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Solution

The fourth proportional to 591,451.76, 815,918.91 and 387,414.38 is: 534,445.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,451.76 : 815,918.91 = 387,414.38 : x
  2. Step 2: Convert to fraction form
    591,451.76/815,918.91 = 387,414.38/x
  3. Step 3: Cross multiply
    591,451.76x = 815,918.91 × 387,414.38
  4. Step 4: Simplify right side
    591,451.76x = 316,098,714,568.33
  5. Step 5: Solve for x
    x = 316,098,714,568.33/591,451.76
  6. Step 6: Final answer
    x = 534,445.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.