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Finding the Fourth Proportional to 636,318.06, 878,096.34 and 349,835.91

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Solution

The fourth proportional to 636,318.06, 878,096.34 and 349,835.91 is: 482,761.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,318.06 : 878,096.34 = 349,835.91 : x
  2. Step 2: Convert to fraction form
    636,318.06/878,096.34 = 349,835.91/x
  3. Step 3: Cross multiply
    636,318.06x = 878,096.34 × 349,835.91
  4. Step 4: Simplify right side
    636,318.06x = 307,189,632,171.57
  5. Step 5: Solve for x
    x = 307,189,632,171.57/636,318.06
  6. Step 6: Final answer
    x = 482,761.14

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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.