Home / 639,791.28-959,822.40-240,435.60

Finding the Fourth Proportional to 639,791.28, 959,822.40 and 240,435.60

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Solution

The fourth proportional to 639,791.28, 959,822.40 and 240,435.60 is: 360,704.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,791.28 : 959,822.40 = 240,435.60 : x
  2. Step 2: Convert to fraction form
    639,791.28/959,822.40 = 240,435.60/x
  3. Step 3: Cross multiply
    639,791.28x = 959,822.40 × 240,435.60
  4. Step 4: Simplify right side
    639,791.28x = 230,775,474,637.44
  5. Step 5: Solve for x
    x = 230,775,474,637.44/639,791.28
  6. Step 6: Final answer
    x = 360,704.31

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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.