Home / 726,314.38-1,002,321.49-399,631.66

Finding the Fourth Proportional to 726,314.38, 1,002,321.49 and 399,631.66

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Solution

The fourth proportional to 726,314.38, 1,002,321.49 and 399,631.66 is: 551,495.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,314.38 : 1,002,321.49 = 399,631.66 : x
  2. Step 2: Convert to fraction form
    726,314.38/1,002,321.49 = 399,631.66/x
  3. Step 3: Cross multiply
    726,314.38x = 1,002,321.49 × 399,631.66
  4. Step 4: Simplify right side
    726,314.38x = 400,559,394,891.69
  5. Step 5: Solve for x
    x = 400,559,394,891.69/726,314.38
  6. Step 6: Final answer
    x = 551,495.89

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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.