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Finding the Fourth Proportional to 636,679.26, 878,600.10 and 361,087.68

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Solution

The fourth proportional to 636,679.26, 878,600.10 and 361,087.68 is: 498,291.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,679.26 : 878,600.10 = 361,087.68 : x
  2. Step 2: Convert to fraction form
    636,679.26/878,600.10 = 361,087.68/x
  3. Step 3: Cross multiply
    636,679.26x = 878,600.10 × 361,087.68
  4. Step 4: Simplify right side
    636,679.26x = 317,251,671,756.77
  5. Step 5: Solve for x
    x = 317,251,671,756.77/636,679.26
  6. Step 6: Final answer
    x = 498,291.20

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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.