Home / 667,000.79-1,000,687.40-267,921.80

Finding the Fourth Proportional to 667,000.79, 1,000,687.40 and 267,921.80

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Solution

The fourth proportional to 667,000.79, 1,000,687.40 and 267,921.80 is: 401,957.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,000.79 : 1,000,687.40 = 267,921.80 : x
  2. Step 2: Convert to fraction form
    667,000.79/1,000,687.40 = 267,921.80/x
  3. Step 3: Cross multiply
    667,000.79x = 1,000,687.40 × 267,921.80
  4. Step 4: Simplify right side
    667,000.79x = 268,105,963,102.27
  5. Step 5: Solve for x
    x = 268,105,963,102.27/667,000.79
  6. Step 6: Final answer
    x = 401,957.49

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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.