Home / 2,661,200.40-3,987,207.90-1,238,338.20

Finding the Fourth Proportional to 2,661,200.40, 3,987,207.90 and 1,238,338.20

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Solution

The fourth proportional to 2,661,200.40, 3,987,207.90 and 1,238,338.20 is: 1,855,370.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661,200.40 : 3,987,207.90 = 1,238,338.20 : x
  2. Step 2: Convert to fraction form
    2,661,200.40/3,987,207.90 = 1,238,338.20/x
  3. Step 3: Cross multiply
    2,661,200.40x = 3,987,207.90 × 1,238,338.20
  4. Step 4: Simplify right side
    2,661,200.40x = 4,937,511,853,911.78
  5. Step 5: Solve for x
    x = 4,937,511,853,911.78/2,661,200.40
  6. Step 6: Final answer
    x = 1,855,370.18

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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.