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Finding the Fourth Proportional to 636,546.12, 878,442.35 and 364,613.87

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Solution

The fourth proportional to 636,546.12, 878,442.35 and 364,613.87 is: 503,172.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,546.12 : 878,442.35 = 364,613.87 : x
  2. Step 2: Convert to fraction form
    636,546.12/878,442.35 = 364,613.87/x
  3. Step 3: Cross multiply
    636,546.12x = 878,442.35 × 364,613.87
  4. Step 4: Simplify right side
    636,546.12x = 320,292,262,288.15
  5. Step 5: Solve for x
    x = 320,292,262,288.15/636,546.12
  6. Step 6: Final answer
    x = 503,172.12

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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.