Home / 456,781.20-685,787.40-267,435.60

Finding the Fourth Proportional to 456,781.20, 685,787.40 and 267,435.60

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Solution

The fourth proportional to 456,781.20, 685,787.40 and 267,435.60 is: 401,513.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,781.20 : 685,787.40 = 267,435.60 : x
  2. Step 2: Convert to fraction form
    456,781.20/685,787.40 = 267,435.60/x
  3. Step 3: Cross multiply
    456,781.20x = 685,787.40 × 267,435.60
  4. Step 4: Simplify right side
    456,781.20x = 183,403,964,791.44
  5. Step 5: Solve for x
    x = 183,403,964,791.44/456,781.20
  6. Step 6: Final answer
    x = 401,513.82

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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.