Home / 853,488.20-1,280,422.94-321,013.80

Finding the Fourth Proportional to 853,488.20, 1,280,422.94 and 321,013.80

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Solution

The fourth proportional to 853,488.20, 1,280,422.94 and 321,013.80 is: 481,592.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,488.20 : 1,280,422.94 = 321,013.80 : x
  2. Step 2: Convert to fraction form
    853,488.20/1,280,422.94 = 321,013.80/x
  3. Step 3: Cross multiply
    853,488.20x = 1,280,422.94 × 321,013.80
  4. Step 4: Simplify right side
    853,488.20x = 411,033,433,576.57
  5. Step 5: Solve for x
    x = 411,033,433,576.57/853,488.20
  6. Step 6: Final answer
    x = 481,592.40

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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.