Home / 853,481.08-1,280,412.28-321,006.72

Finding the Fourth Proportional to 853,481.08, 1,280,412.28 and 321,006.72

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Solution

The fourth proportional to 853,481.08, 1,280,412.28 and 321,006.72 is: 481,581.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,481.08 : 1,280,412.28 = 321,006.72 : x
  2. Step 2: Convert to fraction form
    853,481.08/1,280,412.28 = 321,006.72/x
  3. Step 3: Cross multiply
    853,481.08x = 1,280,412.28 × 321,006.72
  4. Step 4: Simplify right side
    853,481.08x = 411,020,946,250.52
  5. Step 5: Solve for x
    x = 411,020,946,250.52/853,481.08
  6. Step 6: Final answer
    x = 481,581.79

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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.