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Finding the Fourth Proportional to 636,863.28, 954,948.78 and 316,311.90

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Solution

The fourth proportional to 636,863.28, 954,948.78 and 316,311.90 is: 474,295.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,863.28 : 954,948.78 = 316,311.90 : x
  2. Step 2: Convert to fraction form
    636,863.28/954,948.78 = 316,311.90/x
  3. Step 3: Cross multiply
    636,863.28x = 954,948.78 × 316,311.90
  4. Step 4: Simplify right side
    636,863.28x = 302,061,663,004.48
  5. Step 5: Solve for x
    x = 302,061,663,004.48/636,863.28
  6. Step 6: Final answer
    x = 474,295.93

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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.