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Finding the Fourth Proportional to 605,474.66, 908,211.45 and 285,551.90

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Solution

The fourth proportional to 605,474.66, 908,211.45 and 285,551.90 is: 428,327.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,474.66 : 908,211.45 = 285,551.90 : x
  2. Step 2: Convert to fraction form
    605,474.66/908,211.45 = 285,551.90/x
  3. Step 3: Cross multiply
    605,474.66x = 908,211.45 × 285,551.90
  4. Step 4: Simplify right side
    605,474.66x = 259,341,505,149.26
  5. Step 5: Solve for x
    x = 259,341,505,149.26/605,474.66
  6. Step 6: Final answer
    x = 428,327.60

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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.