Home / 8,520,551,998.80-12,780,827,998.20-6,454,309,390.80

Finding the Fourth Proportional to 8,520,551,998.80, 12,780,827,998.20 and 6,454,309,390.80

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Solution

The fourth proportional to 8,520,551,998.80, 12,780,827,998.20 and 6,454,309,390.80 is: 9,681,464,086.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520,551,998.80 : 12,780,827,998.20 = 6,454,309,390.80 : x
  2. Step 2: Convert to fraction form
    8,520,551,998.80/12,780,827,998.20 = 6,454,309,390.80/x
  3. Step 3: Cross multiply
    8,520,551,998.80x = 12,780,827,998.20 × 6,454,309,390.80
  4. Step 4: Simplify right side
    8,520,551,998.80x = 82,491,418,170,981,826,560
  5. Step 5: Solve for x
    x = 82,491,418,170,981,826,560/8,520,551,998.80
  6. Step 6: Final answer
    x = 9,681,464,086.20

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Double scale
Find fourth proportional to 8,520,551,999.80, 12,780,827,999.70 and 6,454,309,391.80
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.