Home / 987,134.82-1,361,553.21-681,333.90

Finding the Fourth Proportional to 987,134.82, 1,361,553.21 and 681,333.90

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Solution

The fourth proportional to 987,134.82, 1,361,553.21 and 681,333.90 is: 939,762.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,134.82 : 1,361,553.21 = 681,333.90 : x
  2. Step 2: Convert to fraction form
    987,134.82/1,361,553.21 = 681,333.90/x
  3. Step 3: Cross multiply
    987,134.82x = 1,361,553.21 × 681,333.90
  4. Step 4: Simplify right side
    987,134.82x = 927,672,358,626.82
  5. Step 5: Solve for x
    x = 927,672,358,626.82/987,134.82
  6. Step 6: Final answer
    x = 939,762.57

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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.