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Finding the Fourth Proportional to 605,758.20, 908,418.60 and 306,139.20

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Solution

The fourth proportional to 605,758.20, 908,418.60 and 306,139.20 is: 459,098.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,758.20 : 908,418.60 = 306,139.20 : x
  2. Step 2: Convert to fraction form
    605,758.20/908,418.60 = 306,139.20/x
  3. Step 3: Cross multiply
    605,758.20x = 908,418.60 × 306,139.20
  4. Step 4: Simplify right side
    605,758.20x = 278,102,543,469.12
  5. Step 5: Solve for x
    x = 278,102,543,469.12/605,758.20
  6. Step 6: Final answer
    x = 459,098.27

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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.