Home / 3,990,147,891.20-5,985,221,836.80-2,520,819,814.40

Finding the Fourth Proportional to 3,990,147,891.20, 5,985,221,836.80 and 2,520,819,814.40

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Solution

The fourth proportional to 3,990,147,891.20, 5,985,221,836.80 and 2,520,819,814.40 is: 3,781,229,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990,147,891.20 : 5,985,221,836.80 = 2,520,819,814.40 : x
  2. Step 2: Convert to fraction form
    3,990,147,891.20/5,985,221,836.80 = 2,520,819,814.40/x
  3. Step 3: Cross multiply
    3,990,147,891.20x = 5,985,221,836.80 × 2,520,819,814.40
  4. Step 4: Simplify right side
    3,990,147,891.20x = 15,087,665,799,785,005,056
  5. Step 5: Solve for x
    x = 15,087,665,799,785,005,056/3,990,147,891.20
  6. Step 6: Final answer
    x = 3,781,229,721.60

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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.