Home / 8,207,998.40-12,311,997.60-5,520,612.80

Finding the Fourth Proportional to 8,207,998.40, 12,311,997.60 and 5,520,612.80

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Solution

The fourth proportional to 8,207,998.40, 12,311,997.60 and 5,520,612.80 is: 8,280,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,207,998.40 : 12,311,997.60 = 5,520,612.80 : x
  2. Step 2: Convert to fraction form
    8,207,998.40/12,311,997.60 = 5,520,612.80/x
  3. Step 3: Cross multiply
    8,207,998.40x = 12,311,997.60 × 5,520,612.80
  4. Step 4: Simplify right side
    8,207,998.40x = 67,969,771,544,129.27
  5. Step 5: Solve for x
    x = 67,969,771,544,129.27/8,207,998.40
  6. Step 6: Final answer
    x = 8,280,919.20

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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.