Home / 987,131.82-1,361,549.07-681,330.90

Finding the Fourth Proportional to 987,131.82, 1,361,549.07 and 681,330.90

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Solution

The fourth proportional to 987,131.82, 1,361,549.07 and 681,330.90 is: 939,758.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,131.82 : 1,361,549.07 = 681,330.90 : x
  2. Step 2: Convert to fraction form
    987,131.82/1,361,549.07 = 681,330.90/x
  3. Step 3: Cross multiply
    987,131.82x = 1,361,549.07 × 681,330.90
  4. Step 4: Simplify right side
    987,131.82x = 927,665,453,257.26
  5. Step 5: Solve for x
    x = 927,665,453,257.26/987,131.82
  6. Step 6: Final answer
    x = 939,758.43

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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.