Home / 866,278.78-1,299,540.28-267,288.64

Finding the Fourth Proportional to 866,278.78, 1,299,540.28 and 267,288.64

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Solution

The fourth proportional to 866,278.78, 1,299,540.28 and 267,288.64 is: 400,970.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,278.78 : 1,299,540.28 = 267,288.64 : x
  2. Step 2: Convert to fraction form
    866,278.78/1,299,540.28 = 267,288.64/x
  3. Step 3: Cross multiply
    866,278.78x = 1,299,540.28 × 267,288.64
  4. Step 4: Simplify right side
    866,278.78x = 347,352,356,024.96
  5. Step 5: Solve for x
    x = 347,352,356,024.96/866,278.78
  6. Step 6: Final answer
    x = 400,970.64

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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.