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Finding the Fourth Proportional to 911,449.14, 1,367,468.96 and 438,171.41

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Solution

The fourth proportional to 911,449.14, 1,367,468.96 and 438,171.41 is: 657,399.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,449.14 : 1,367,468.96 = 438,171.41 : x
  2. Step 2: Convert to fraction form
    911,449.14/1,367,468.96 = 438,171.41/x
  3. Step 3: Cross multiply
    911,449.14x = 1,367,468.96 × 438,171.41
  4. Step 4: Simplify right side
    911,449.14x = 599,185,793,306.23
  5. Step 5: Solve for x
    x = 599,185,793,306.23/911,449.14
  6. Step 6: Final answer
    x = 657,399.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.