Home / 920,472.92-1,380,676.56-321,431.75

Finding the Fourth Proportional to 920,472.92, 1,380,676.56 and 321,431.75

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Solution

The fourth proportional to 920,472.92, 1,380,676.56 and 321,431.75 is: 482,136.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,472.92 : 1,380,676.56 = 321,431.75 : x
  2. Step 2: Convert to fraction form
    920,472.92/1,380,676.56 = 321,431.75/x
  3. Step 3: Cross multiply
    920,472.92x = 1,380,676.56 × 321,431.75
  4. Step 4: Simplify right side
    920,472.92x = 443,793,276,764.98
  5. Step 5: Solve for x
    x = 443,793,276,764.98/920,472.92
  6. Step 6: Final answer
    x = 482,136.16

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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.