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Finding the Fourth Proportional to 1,304,249.32, 1,799,882.45 and 787,931.43

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Solution

The fourth proportional to 1,304,249.32, 1,799,882.45 and 787,931.43 is: 1,087,356.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,304,249.32 : 1,799,882.45 = 787,931.43 : x
  2. Step 2: Convert to fraction form
    1,304,249.32/1,799,882.45 = 787,931.43/x
  3. Step 3: Cross multiply
    1,304,249.32x = 1,799,882.45 × 787,931.43
  4. Step 4: Simplify right side
    1,304,249.32x = 1,418,183,952,660.40
  5. Step 5: Solve for x
    x = 1,418,183,952,660.40/1,304,249.32
  6. Step 6: Final answer
    x = 1,087,356.48

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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.