Home / 8,318,218.20-12,477,327.30-7,987,543.80

Finding the Fourth Proportional to 8,318,218.20, 12,477,327.30 and 7,987,543.80

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Solution

The fourth proportional to 8,318,218.20, 12,477,327.30 and 7,987,543.80 is: 11,981,315.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318,218.20 : 12,477,327.30 = 7,987,543.80 : x
  2. Step 2: Convert to fraction form
    8,318,218.20/12,477,327.30 = 7,987,543.80/x
  3. Step 3: Cross multiply
    8,318,218.20x = 12,477,327.30 × 7,987,543.80
  4. Step 4: Simplify right side
    8,318,218.20x = 99,663,198,315,685.75
  5. Step 5: Solve for x
    x = 99,663,198,315,685.75/8,318,218.20
  6. Step 6: Final answer
    x = 11,981,315.70

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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.