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Finding the Fourth Proportional to 636,336.09, 878,121.37 and 349,853.97

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Solution

The fourth proportional to 636,336.09, 878,121.37 and 349,853.97 is: 482,786.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,336.09 : 878,121.37 = 349,853.97 : x
  2. Step 2: Convert to fraction form
    636,336.09/878,121.37 = 349,853.97/x
  3. Step 3: Cross multiply
    636,336.09x = 878,121.37 × 349,853.97
  4. Step 4: Simplify right side
    636,336.09x = 307,214,247,436.34
  5. Step 5: Solve for x
    x = 307,214,247,436.34/636,336.09
  6. Step 6: Final answer
    x = 482,786.14

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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.