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Finding the Fourth Proportional to 898,286.40, 1,347,451.20 and 267,220.80

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Solution

The fourth proportional to 898,286.40, 1,347,451.20 and 267,220.80 is: 400,837.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,286.40 : 1,347,451.20 = 267,220.80 : x
  2. Step 2: Convert to fraction form
    898,286.40/1,347,451.20 = 267,220.80/x
  3. Step 3: Cross multiply
    898,286.40x = 1,347,451.20 × 267,220.80
  4. Step 4: Simplify right side
    898,286.40x = 360,066,987,624.96
  5. Step 5: Solve for x
    x = 360,066,987,624.96/898,286.40
  6. Step 6: Final answer
    x = 400,837.63

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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.