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Finding the Fourth Proportional to 479,512.92, 661,749.42 and 275,630.04

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Solution

The fourth proportional to 479,512.92, 661,749.42 and 275,630.04 is: 380,381.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,512.92 : 661,749.42 = 275,630.04 : x
  2. Step 2: Convert to fraction form
    479,512.92/661,749.42 = 275,630.04/x
  3. Step 3: Cross multiply
    479,512.92x = 661,749.42 × 275,630.04
  4. Step 4: Simplify right side
    479,512.92x = 182,398,019,104.58
  5. Step 5: Solve for x
    x = 182,398,019,104.58/479,512.92
  6. Step 6: Final answer
    x = 380,381.87

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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.