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Finding the Fourth Proportional to 404,405.22, 606,115.89 and 286,110.66

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Solution

The fourth proportional to 404,405.22, 606,115.89 and 286,110.66 is: 428,817.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,405.22 : 606,115.89 = 286,110.66 : x
  2. Step 2: Convert to fraction form
    404,405.22/606,115.89 = 286,110.66/x
  3. Step 3: Cross multiply
    404,405.22x = 606,115.89 × 286,110.66
  4. Step 4: Simplify right side
    404,405.22x = 173,416,217,324.39
  5. Step 5: Solve for x
    x = 173,416,217,324.39/404,405.22
  6. Step 6: Final answer
    x = 428,817.95

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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.