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Finding the Fourth Proportional to 636,296.50, 878,109.69 and 349,837.30

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Solution

The fourth proportional to 636,296.50, 878,109.69 and 349,837.30 is: 482,786.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,296.50 : 878,109.69 = 349,837.30 : x
  2. Step 2: Convert to fraction form
    636,296.50/878,109.69 = 349,837.30/x
  3. Step 3: Cross multiply
    636,296.50x = 878,109.69 × 349,837.30
  4. Step 4: Simplify right side
    636,296.50x = 307,195,523,053.44
  5. Step 5: Solve for x
    x = 307,195,523,053.44/636,296.50
  6. Step 6: Final answer
    x = 482,786.76

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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.