Home / 987,728.92-1,481,560.34-418,743.95

Finding the Fourth Proportional to 987,728.92, 1,481,560.34 and 418,743.95

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Solution

The fourth proportional to 987,728.92, 1,481,560.34 and 418,743.95 is: 628,101.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,728.92 : 1,481,560.34 = 418,743.95 : x
  2. Step 2: Convert to fraction form
    987,728.92/1,481,560.34 = 418,743.95/x
  3. Step 3: Cross multiply
    987,728.92x = 1,481,560.34 × 418,743.95
  4. Step 4: Simplify right side
    987,728.92x = 620,394,419,433.42
  5. Step 5: Solve for x
    x = 620,394,419,433.42/987,728.92
  6. Step 6: Final answer
    x = 628,101.91

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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.