Home / 853,226.28-1,279,048.68-321,100.20

Finding the Fourth Proportional to 853,226.28, 1,279,048.68 and 321,100.20

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Solution

The fourth proportional to 853,226.28, 1,279,048.68 and 321,100.20 is: 481,352.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,226.28 : 1,279,048.68 = 321,100.20 : x
  2. Step 2: Convert to fraction form
    853,226.28/1,279,048.68 = 321,100.20/x
  3. Step 3: Cross multiply
    853,226.28x = 1,279,048.68 × 321,100.20
  4. Step 4: Simplify right side
    853,226.28x = 410,702,786,957.74
  5. Step 5: Solve for x
    x = 410,702,786,957.74/853,226.28
  6. Step 6: Final answer
    x = 481,352.72

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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.