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Finding the Fourth Proportional to 999,957.69, 1,500,123.17 and 400,965.73

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Solution

The fourth proportional to 999,957.69, 1,500,123.17 and 400,965.73 is: 601,523.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,957.69 : 1,500,123.17 = 400,965.73 : x
  2. Step 2: Convert to fraction form
    999,957.69/1,500,123.17 = 400,965.73/x
  3. Step 3: Cross multiply
    999,957.69x = 1,500,123.17 × 400,965.73
  4. Step 4: Simplify right side
    999,957.69x = 601,497,979,201.07
  5. Step 5: Solve for x
    x = 601,497,979,201.07/999,957.69
  6. Step 6: Final answer
    x = 601,523.43

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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.