Home / 853,535.34-1,280,493.51-321,060.78

Finding the Fourth Proportional to 853,535.34, 1,280,493.51 and 321,060.78

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Solution

The fourth proportional to 853,535.34, 1,280,493.51 and 321,060.78 is: 481,662.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,535.34 : 1,280,493.51 = 321,060.78 : x
  2. Step 2: Convert to fraction form
    853,535.34/1,280,493.51 = 321,060.78/x
  3. Step 3: Cross multiply
    853,535.34x = 1,280,493.51 × 321,060.78
  4. Step 4: Simplify right side
    853,535.34x = 411,116,245,105.54
  5. Step 5: Solve for x
    x = 411,116,245,105.54/853,535.34
  6. Step 6: Final answer
    x = 481,662.83

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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.