Home / 771,331.60-1,156,997.40-321,903.10

Finding the Fourth Proportional to 771,331.60, 1,156,997.40 and 321,903.10

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Solution

The fourth proportional to 771,331.60, 1,156,997.40 and 321,903.10 is: 482,854.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,331.60 : 1,156,997.40 = 321,903.10 : x
  2. Step 2: Convert to fraction form
    771,331.60/1,156,997.40 = 321,903.10/x
  3. Step 3: Cross multiply
    771,331.60x = 1,156,997.40 × 321,903.10
  4. Step 4: Simplify right side
    771,331.60x = 372,441,049,751.94
  5. Step 5: Solve for x
    x = 372,441,049,751.94/771,331.60
  6. Step 6: Final answer
    x = 482,854.65

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Double scale
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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.