Home / 2,108,205.80-3,162,615.42-687,912.20

Finding the Fourth Proportional to 2,108,205.80, 3,162,615.42 and 687,912.20

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Solution

The fourth proportional to 2,108,205.80, 3,162,615.42 and 687,912.20 is: 1,031,968.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108,205.80 : 3,162,615.42 = 687,912.20 : x
  2. Step 2: Convert to fraction form
    2,108,205.80/3,162,615.42 = 687,912.20/x
  3. Step 3: Cross multiply
    2,108,205.80x = 3,162,615.42 × 687,912.20
  4. Step 4: Simplify right side
    2,108,205.80x = 2,175,601,731,326.12
  5. Step 5: Solve for x
    x = 2,175,601,731,326.12/2,108,205.80
  6. Step 6: Final answer
    x = 1,031,968.38

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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.