Home / 781,229.81-1,078,127.72-458,937.09

Finding the Fourth Proportional to 781,229.81, 1,078,127.72 and 458,937.09

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Solution

The fourth proportional to 781,229.81, 1,078,127.72 and 458,937.09 is: 633,351.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,229.81 : 1,078,127.72 = 458,937.09 : x
  2. Step 2: Convert to fraction form
    781,229.81/1,078,127.72 = 458,937.09/x
  3. Step 3: Cross multiply
    781,229.81x = 1,078,127.72 × 458,937.09
  4. Step 4: Simplify right side
    781,229.81x = 494,792,797,891.46
  5. Step 5: Solve for x
    x = 494,792,797,891.46/781,229.81
  6. Step 6: Final answer
    x = 633,351.15

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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.