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Finding the Fourth Proportional to 636,099.97, 877,806.68 and 349,619.98

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Solution

The fourth proportional to 636,099.97, 877,806.68 and 349,619.98 is: 482,469.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,099.97 : 877,806.68 = 349,619.98 : x
  2. Step 2: Convert to fraction form
    636,099.97/877,806.68 = 349,619.98/x
  3. Step 3: Cross multiply
    636,099.97x = 877,806.68 × 349,619.98
  4. Step 4: Simplify right side
    636,099.97x = 306,898,753,905.47
  5. Step 5: Solve for x
    x = 306,898,753,905.47/636,099.97
  6. Step 6: Final answer
    x = 482,469.37

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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.