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Finding the Fourth Proportional to 636,307.39, 878,110.11 and 349,829.50

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Solution

The fourth proportional to 636,307.39, 878,110.11 and 349,829.50 is: 482,767.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,307.39 : 878,110.11 = 349,829.50 : x
  2. Step 2: Convert to fraction form
    636,307.39/878,110.11 = 349,829.50/x
  3. Step 3: Cross multiply
    636,307.39x = 878,110.11 × 349,829.50
  4. Step 4: Simplify right side
    636,307.39x = 307,188,820,726.25
  5. Step 5: Solve for x
    x = 307,188,820,726.25/636,307.39
  6. Step 6: Final answer
    x = 482,767.96

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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.