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Finding the Fourth Proportional to 606,843.45, 911,249.33 and 408,045.15

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Solution

The fourth proportional to 606,843.45, 911,249.33 and 408,045.15 is: 612,729.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,843.45 : 911,249.33 = 408,045.15 : x
  2. Step 2: Convert to fraction form
    606,843.45/911,249.33 = 408,045.15/x
  3. Step 3: Cross multiply
    606,843.45x = 911,249.33 × 408,045.15
  4. Step 4: Simplify right side
    606,843.45x = 371,830,867,507.02
  5. Step 5: Solve for x
    x = 371,830,867,507.02/606,843.45
  6. Step 6: Final answer
    x = 612,729.47

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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.