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Finding the Fourth Proportional to 922,987.80, 1,383,704.10 and 479,755.80

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Solution

The fourth proportional to 922,987.80, 1,383,704.10 and 479,755.80 is: 719,229.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,987.80 : 1,383,704.10 = 479,755.80 : x
  2. Step 2: Convert to fraction form
    922,987.80/1,383,704.10 = 479,755.80/x
  3. Step 3: Cross multiply
    922,987.80x = 1,383,704.10 × 479,755.80
  4. Step 4: Simplify right side
    922,987.80x = 663,840,067,458.78
  5. Step 5: Solve for x
    x = 663,840,067,458.78/922,987.80
  6. Step 6: Final answer
    x = 719,229.51

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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.