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Finding the Fourth Proportional to 408,045.15, 612,067.73 and 404,108.55

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Solution

The fourth proportional to 408,045.15, 612,067.73 and 404,108.55 is: 606,162.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,045.15 : 612,067.73 = 404,108.55 : x
  2. Step 2: Convert to fraction form
    408,045.15/612,067.73 = 404,108.55/x
  3. Step 3: Cross multiply
    408,045.15x = 612,067.73 × 404,108.55
  4. Step 4: Simplify right side
    408,045.15x = 247,341,800,851.55
  5. Step 5: Solve for x
    x = 247,341,800,851.55/408,045.15
  6. Step 6: Final answer
    x = 606,162.83

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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.