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Finding the Fourth Proportional to 721,758.87, 996,062.67 and 415,883.16

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Solution

The fourth proportional to 721,758.87, 996,062.67 and 415,883.16 is: 573,939.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,758.87 : 996,062.67 = 415,883.16 : x
  2. Step 2: Convert to fraction form
    721,758.87/996,062.67 = 415,883.16/x
  3. Step 3: Cross multiply
    721,758.87x = 996,062.67 × 415,883.16
  4. Step 4: Simplify right side
    721,758.87x = 414,245,690,757.64
  5. Step 5: Solve for x
    x = 414,245,690,757.64/721,758.87
  6. Step 6: Final answer
    x = 573,939.18

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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.