Home / 726,128.39-1,002,084.81-403,861.79

Finding the Fourth Proportional to 726,128.39, 1,002,084.81 and 403,861.79

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Solution

The fourth proportional to 726,128.39, 1,002,084.81 and 403,861.79 is: 557,344.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,128.39 : 1,002,084.81 = 403,861.79 : x
  2. Step 2: Convert to fraction form
    726,128.39/1,002,084.81 = 403,861.79/x
  3. Step 3: Cross multiply
    726,128.39x = 1,002,084.81 × 403,861.79
  4. Step 4: Simplify right side
    726,128.39x = 404,703,765,098.41
  5. Step 5: Solve for x
    x = 404,703,765,098.41/726,128.39
  6. Step 6: Final answer
    x = 557,344.64

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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.