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Finding the Fourth Proportional to 636,294.86, 878,079.03 and 349,812.44

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Solution

The fourth proportional to 636,294.86, 878,079.03 and 349,812.44 is: 482,736.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,294.86 : 878,079.03 = 349,812.44 : x
  2. Step 2: Convert to fraction form
    636,294.86/878,079.03 = 349,812.44/x
  3. Step 3: Cross multiply
    636,294.86x = 878,079.03 × 349,812.44
  4. Step 4: Simplify right side
    636,294.86x = 307,162,967,555.43
  5. Step 5: Solve for x
    x = 307,162,967,555.43/636,294.86
  6. Step 6: Final answer
    x = 482,736.84

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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.