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Finding the Fourth Proportional to 636,979.24, 878,930.88 and 364,994.80

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Solution

The fourth proportional to 636,979.24, 878,930.88 and 364,994.80 is: 503,635.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,979.24 : 878,930.88 = 364,994.80 : x
  2. Step 2: Convert to fraction form
    636,979.24/878,930.88 = 364,994.80/x
  3. Step 3: Cross multiply
    636,979.24x = 878,930.88 × 364,994.80
  4. Step 4: Simplify right side
    636,979.24x = 320,805,200,759.42
  5. Step 5: Solve for x
    x = 320,805,200,759.42/636,979.24
  6. Step 6: Final answer
    x = 503,635.25

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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.