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Finding the Fourth Proportional to 636,245.06, 878,034.99 and 345,876.17

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Solution

The fourth proportional to 636,245.06, 878,034.99 and 345,876.17 is: 477,318.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,245.06 : 878,034.99 = 345,876.17 : x
  2. Step 2: Convert to fraction form
    636,245.06/878,034.99 = 345,876.17/x
  3. Step 3: Cross multiply
    636,245.06x = 878,034.99 × 345,876.17
  4. Step 4: Simplify right side
    636,245.06x = 303,691,375,077.01
  5. Step 5: Solve for x
    x = 303,691,375,077.01/636,245.06
  6. Step 6: Final answer
    x = 477,318.25

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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.