Home / 8,512,081.80-12,768,122.70-5,320,811.40

Finding the Fourth Proportional to 8,512,081.80, 12,768,122.70 and 5,320,811.40

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Solution

The fourth proportional to 8,512,081.80, 12,768,122.70 and 5,320,811.40 is: 7,981,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,512,081.80 : 12,768,122.70 = 5,320,811.40 : x
  2. Step 2: Convert to fraction form
    8,512,081.80/12,768,122.70 = 5,320,811.40/x
  3. Step 3: Cross multiply
    8,512,081.80x = 12,768,122.70 × 5,320,811.40
  4. Step 4: Simplify right side
    8,512,081.80x = 67,936,772,818,758.78
  5. Step 5: Solve for x
    x = 67,936,772,818,758.78/8,512,081.80
  6. Step 6: Final answer
    x = 7,981,217.10

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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.