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Finding the Fourth Proportional to 408,053.15, 612,079.73 and 404,116.55

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Solution

The fourth proportional to 408,053.15, 612,079.73 and 404,116.55 is: 606,174.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,053.15 : 612,079.73 = 404,116.55 : x
  2. Step 2: Convert to fraction form
    408,053.15/612,079.73 = 404,116.55/x
  3. Step 3: Cross multiply
    408,053.15x = 612,079.73 × 404,116.55
  4. Step 4: Simplify right side
    408,053.15x = 247,351,548,812.53
  5. Step 5: Solve for x
    x = 247,351,548,812.53/408,053.15
  6. Step 6: Final answer
    x = 606,174.83

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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.