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Finding the Fourth Proportional to 547,479.40, 821,679.90 and 267,236.20

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Solution

The fourth proportional to 547,479.40, 821,679.90 and 267,236.20 is: 401,079.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,479.40 : 821,679.90 = 267,236.20 : x
  2. Step 2: Convert to fraction form
    547,479.40/821,679.90 = 267,236.20/x
  3. Step 3: Cross multiply
    547,479.40x = 821,679.90 × 267,236.20
  4. Step 4: Simplify right side
    547,479.40x = 219,582,614,092.38
  5. Step 5: Solve for x
    x = 219,582,614,092.38/547,479.40
  6. Step 6: Final answer
    x = 401,079.23

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1.5x scale

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.