Home / 3,990,000.40-5,976,576.60-2,642,808.40

Finding the Fourth Proportional to 3,990,000.40, 5,976,576.60 and 2,642,808.40

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Solution

The fourth proportional to 3,990,000.40, 5,976,576.60 and 2,642,808.40 is: 3,958,632.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990,000.40 : 5,976,576.60 = 2,642,808.40 : x
  2. Step 2: Convert to fraction form
    3,990,000.40/5,976,576.60 = 2,642,808.40/x
  3. Step 3: Cross multiply
    3,990,000.40x = 5,976,576.60 × 2,642,808.40
  4. Step 4: Simplify right side
    3,990,000.40x = 15,794,946,841,723.44
  5. Step 5: Solve for x
    x = 15,794,946,841,723.44/3,990,000.40
  6. Step 6: Final answer
    x = 3,958,632.90

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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.