Home / 987,132.82-1,361,550.45-681,331.90

Finding the Fourth Proportional to 987,132.82, 1,361,550.45 and 681,331.90

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Solution

The fourth proportional to 987,132.82, 1,361,550.45 and 681,331.90 is: 939,759.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,132.82 : 1,361,550.45 = 681,331.90 : x
  2. Step 2: Convert to fraction form
    987,132.82/1,361,550.45 = 681,331.90/x
  3. Step 3: Cross multiply
    987,132.82x = 1,361,550.45 × 681,331.90
  4. Step 4: Simplify right side
    987,132.82x = 927,667,755,044.36
  5. Step 5: Solve for x
    x = 927,667,755,044.36/987,132.82
  6. Step 6: Final answer
    x = 939,759.81

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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.