Home / 8,512,000.40-12,768,000.60-7,815,270.80

Finding the Fourth Proportional to 8,512,000.40, 12,768,000.60 and 7,815,270.80

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Solution

The fourth proportional to 8,512,000.40, 12,768,000.60 and 7,815,270.80 is: 11,722,906.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,512,000.40 : 12,768,000.60 = 7,815,270.80 : x
  2. Step 2: Convert to fraction form
    8,512,000.40/12,768,000.60 = 7,815,270.80/x
  3. Step 3: Cross multiply
    8,512,000.40x = 12,768,000.60 × 7,815,270.80
  4. Step 4: Simplify right side
    8,512,000.40x = 99,785,382,263,562.47
  5. Step 5: Solve for x
    x = 99,785,382,263,562.47/8,512,000.40
  6. Step 6: Final answer
    x = 11,722,906.20

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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.