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Finding the Fourth Proportional to 404,399.22, 606,106.89 and 286,104.66

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Solution

The fourth proportional to 404,399.22, 606,106.89 and 286,104.66 is: 428,808.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,399.22 : 606,106.89 = 286,104.66 : x
  2. Step 2: Convert to fraction form
    404,399.22/606,106.89 = 286,104.66/x
  3. Step 3: Cross multiply
    404,399.22x = 606,106.89 × 286,104.66
  4. Step 4: Simplify right side
    404,399.22x = 173,410,005,687.11
  5. Step 5: Solve for x
    x = 173,410,005,687.11/404,399.22
  6. Step 6: Final answer
    x = 428,808.95

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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.