Home / 771,330.60-1,156,995.90-321,902.10

Finding the Fourth Proportional to 771,330.60, 1,156,995.90 and 321,902.10

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Solution

The fourth proportional to 771,330.60, 1,156,995.90 and 321,902.10 is: 482,853.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,330.60 : 1,156,995.90 = 321,902.10 : x
  2. Step 2: Convert to fraction form
    771,330.60/1,156,995.90 = 321,902.10/x
  3. Step 3: Cross multiply
    771,330.60x = 1,156,995.90 × 321,902.10
  4. Step 4: Simplify right side
    771,330.60x = 372,439,409,901.39
  5. Step 5: Solve for x
    x = 372,439,409,901.39/771,330.60
  6. Step 6: Final answer
    x = 482,853.15

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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.