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Finding the Fourth Proportional to 667,661.94, 1,002,149.01 and 489,662.01

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Solution

The fourth proportional to 667,661.94, 1,002,149.01 and 489,662.01 is: 734,974.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,661.94 : 1,002,149.01 = 489,662.01 : x
  2. Step 2: Convert to fraction form
    667,661.94/1,002,149.01 = 489,662.01/x
  3. Step 3: Cross multiply
    667,661.94x = 1,002,149.01 × 489,662.01
  4. Step 4: Simplify right side
    667,661.94x = 490,714,298,556.11
  5. Step 5: Solve for x
    x = 490,714,298,556.11/667,661.94
  6. Step 6: Final answer
    x = 734,974.20

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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.