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Finding the Fourth Proportional to 478,836.20, 718,254.30 and 310,874.60

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Solution

The fourth proportional to 478,836.20, 718,254.30 and 310,874.60 is: 466,311.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,836.20 : 718,254.30 = 310,874.60 : x
  2. Step 2: Convert to fraction form
    478,836.20/718,254.30 = 310,874.60/x
  3. Step 3: Cross multiply
    478,836.20x = 718,254.30 × 310,874.60
  4. Step 4: Simplify right side
    478,836.20x = 223,287,018,210.78
  5. Step 5: Solve for x
    x = 223,287,018,210.78/478,836.20
  6. Step 6: Final answer
    x = 466,311.90

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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.