Home / 987,198.38-1,480,502.94-418,569.88

Finding the Fourth Proportional to 987,198.38, 1,480,502.94 and 418,569.88

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Solution

The fourth proportional to 987,198.38, 1,480,502.94 and 418,569.88 is: 627,729.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,198.38 : 1,480,502.94 = 418,569.88 : x
  2. Step 2: Convert to fraction form
    987,198.38/1,480,502.94 = 418,569.88/x
  3. Step 3: Cross multiply
    987,198.38x = 1,480,502.94 × 418,569.88
  4. Step 4: Simplify right side
    987,198.38x = 619,693,937,935.45
  5. Step 5: Solve for x
    x = 619,693,937,935.45/987,198.38
  6. Step 6: Final answer
    x = 627,729.90

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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.