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Finding the Fourth Proportional to 605,958.20, 908,718.60 and 306,339.20

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Solution

The fourth proportional to 605,958.20, 908,718.60 and 306,339.20 is: 459,398.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,958.20 : 908,718.60 = 306,339.20 : x
  2. Step 2: Convert to fraction form
    605,958.20/908,718.60 = 306,339.20/x
  3. Step 3: Cross multiply
    605,958.20x = 908,718.60 × 306,339.20
  4. Step 4: Simplify right side
    605,958.20x = 278,376,128,949.12
  5. Step 5: Solve for x
    x = 278,376,128,949.12/605,958.20
  6. Step 6: Final answer
    x = 459,398.24

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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.