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Finding the Fourth Proportional to 442,004.70, 661,451.85 and 404,679.90

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Solution

The fourth proportional to 442,004.70, 661,451.85 and 404,679.90 is: 605,595.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,004.70 : 661,451.85 = 404,679.90 : x
  2. Step 2: Convert to fraction form
    442,004.70/661,451.85 = 404,679.90/x
  3. Step 3: Cross multiply
    442,004.70x = 661,451.85 × 404,679.90
  4. Step 4: Simplify right side
    442,004.70x = 267,676,268,512.82
  5. Step 5: Solve for x
    x = 267,676,268,512.82/442,004.70
  6. Step 6: Final answer
    x = 605,595.98

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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.