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Finding the Fourth Proportional to 662,518.28, 992,494.38 and 396,488.36

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Solution

The fourth proportional to 662,518.28, 992,494.38 and 396,488.36 is: 593,964.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,518.28 : 992,494.38 = 396,488.36 : x
  2. Step 2: Convert to fraction form
    662,518.28/992,494.38 = 396,488.36/x
  3. Step 3: Cross multiply
    662,518.28x = 992,494.38 × 396,488.36
  4. Step 4: Simplify right side
    662,518.28x = 393,512,469,035.42
  5. Step 5: Solve for x
    x = 393,512,469,035.42/662,518.28
  6. Step 6: Final answer
    x = 593,964.70

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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.