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Finding the Fourth Proportional to 636,306.77, 878,109.26 and 349,828.88

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Solution

The fourth proportional to 636,306.77, 878,109.26 and 349,828.88 is: 482,767.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,306.77 : 878,109.26 = 349,828.88 : x
  2. Step 2: Convert to fraction form
    636,306.77/878,109.26 = 349,828.88/x
  3. Step 3: Cross multiply
    636,306.77x = 878,109.26 × 349,828.88
  4. Step 4: Simplify right side
    636,306.77x = 307,187,972,803.74
  5. Step 5: Solve for x
    x = 307,187,972,803.74/636,306.77
  6. Step 6: Final answer
    x = 482,767.10

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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.