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Finding the Fourth Proportional to 622,987.20, 934,135.20 and 267,940.80

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Solution

The fourth proportional to 622,987.20, 934,135.20 and 267,940.80 is: 401,762.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,987.20 : 934,135.20 = 267,940.80 : x
  2. Step 2: Convert to fraction form
    622,987.20/934,135.20 = 267,940.80/x
  3. Step 3: Cross multiply
    622,987.20x = 934,135.20 × 267,940.80
  4. Step 4: Simplify right side
    622,987.20x = 250,292,932,796.16
  5. Step 5: Solve for x
    x = 250,292,932,796.16/622,987.20
  6. Step 6: Final answer
    x = 401,762.56

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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.