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Finding the Fourth Proportional to 605,578.20, 908,148.60 and 305,959.20

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Solution

The fourth proportional to 605,578.20, 908,148.60 and 305,959.20 is: 458,828.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,578.20 : 908,148.60 = 305,959.20 : x
  2. Step 2: Convert to fraction form
    605,578.20/908,148.60 = 305,959.20/x
  3. Step 3: Cross multiply
    605,578.20x = 908,148.60 × 305,959.20
  4. Step 4: Simplify right side
    605,578.20x = 277,856,419,137.12
  5. Step 5: Solve for x
    x = 277,856,419,137.12/605,578.20
  6. Step 6: Final answer
    x = 458,828.31

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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.