Home / 2,135,642.80-3,203,464.20-639,540.40

Finding the Fourth Proportional to 2,135,642.80, 3,203,464.20 and 639,540.40

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Solution

The fourth proportional to 2,135,642.80, 3,203,464.20 and 639,540.40 is: 959,310.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135,642.80 : 3,203,464.20 = 639,540.40 : x
  2. Step 2: Convert to fraction form
    2,135,642.80/3,203,464.20 = 639,540.40/x
  3. Step 3: Cross multiply
    2,135,642.80x = 3,203,464.20 × 639,540.40
  4. Step 4: Simplify right side
    2,135,642.80x = 2,048,744,775,853.68
  5. Step 5: Solve for x
    x = 2,048,744,775,853.68/2,135,642.80
  6. Step 6: Final answer
    x = 959,310.60

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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.