Home / 853,489.20-1,280,424.44-321,014.80

Finding the Fourth Proportional to 853,489.20, 1,280,424.44 and 321,014.80

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Solution

The fourth proportional to 853,489.20, 1,280,424.44 and 321,014.80 is: 481,593.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,489.20 : 1,280,424.44 = 321,014.80 : x
  2. Step 2: Convert to fraction form
    853,489.20/1,280,424.44 = 321,014.80/x
  3. Step 3: Cross multiply
    853,489.20x = 1,280,424.44 × 321,014.80
  4. Step 4: Simplify right side
    853,489.20x = 411,035,195,521.71
  5. Step 5: Solve for x
    x = 411,035,195,521.71/853,489.20
  6. Step 6: Final answer
    x = 481,593.90

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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.