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Finding the Fourth Proportional to 636,245.56, 878,035.67 and 345,876.66

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Solution

The fourth proportional to 636,245.56, 878,035.67 and 345,876.66 is: 477,318.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,245.56 : 878,035.67 = 345,876.66 : x
  2. Step 2: Convert to fraction form
    636,245.56/878,035.67 = 345,876.66/x
  3. Step 3: Cross multiply
    636,245.56x = 878,035.67 × 345,876.66
  4. Step 4: Simplify right side
    636,245.56x = 303,692,044,900.46
  5. Step 5: Solve for x
    x = 303,692,044,900.46/636,245.56
  6. Step 6: Final answer
    x = 477,318.92

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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.