Home / 853,820.30-1,280,730.46-321,460.76

Finding the Fourth Proportional to 853,820.30, 1,280,730.46 and 321,460.76

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Solution

The fourth proportional to 853,820.30, 1,280,730.46 and 321,460.76 is: 482,191.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,820.30 : 1,280,730.46 = 321,460.76 : x
  2. Step 2: Convert to fraction form
    853,820.30/1,280,730.46 = 321,460.76/x
  3. Step 3: Cross multiply
    853,820.30x = 1,280,730.46 × 321,460.76
  4. Step 4: Simplify right side
    853,820.30x = 411,704,587,026.75
  5. Step 5: Solve for x
    x = 411,704,587,026.75/853,820.30
  6. Step 6: Final answer
    x = 482,191.14

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Similar ratio
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1.5x scale

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.