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Finding the Fourth Proportional to 636,296.68, 878,089.86 and 349,821.64

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Solution

The fourth proportional to 636,296.68, 878,089.86 and 349,821.64 is: 482,754.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,296.68 : 878,089.86 = 349,821.64 : x
  2. Step 2: Convert to fraction form
    636,296.68/878,089.86 = 349,821.64/x
  3. Step 3: Cross multiply
    636,296.68x = 878,089.86 × 349,821.64
  4. Step 4: Simplify right side
    636,296.68x = 307,174,834,892.57
  5. Step 5: Solve for x
    x = 307,174,834,892.57/636,296.68
  6. Step 6: Final answer
    x = 482,754.11

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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.