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Finding the Fourth Proportional to 605,447.16, 908,170.20 and 285,524.40

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Solution

The fourth proportional to 605,447.16, 908,170.20 and 285,524.40 is: 428,286.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,447.16 : 908,170.20 = 285,524.40 : x
  2. Step 2: Convert to fraction form
    605,447.16/908,170.20 = 285,524.40/x
  3. Step 3: Cross multiply
    605,447.16x = 908,170.20 × 285,524.40
  4. Step 4: Simplify right side
    605,447.16x = 259,304,751,452.88
  5. Step 5: Solve for x
    x = 259,304,751,452.88/605,447.16
  6. Step 6: Final answer
    x = 428,286.35

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Similar ratio
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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.