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Finding the Fourth Proportional to 408,042.90, 612,064.35 and 324,062.10

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Solution

The fourth proportional to 408,042.90, 612,064.35 and 324,062.10 is: 486,093.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,042.90 : 612,064.35 = 324,062.10 : x
  2. Step 2: Convert to fraction form
    408,042.90/612,064.35 = 324,062.10/x
  3. Step 3: Cross multiply
    408,042.90x = 612,064.35 × 324,062.10
  4. Step 4: Simplify right side
    408,042.90x = 198,346,858,596.14
  5. Step 5: Solve for x
    x = 198,346,858,596.14/408,042.90
  6. Step 6: Final answer
    x = 486,093.15

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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.