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Finding the Fourth Proportional to 490,524.60, 676,920.40 and 275,660.04

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Solution

The fourth proportional to 490,524.60, 676,920.40 and 275,660.04 is: 380,408.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,524.60 : 676,920.40 = 275,660.04 : x
  2. Step 2: Convert to fraction form
    490,524.60/676,920.40 = 275,660.04/x
  3. Step 3: Cross multiply
    490,524.60x = 676,920.40 × 275,660.04
  4. Step 4: Simplify right side
    490,524.60x = 186,599,904,540.82
  5. Step 5: Solve for x
    x = 186,599,904,540.82/490,524.60
  6. Step 6: Final answer
    x = 380,408.86

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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.