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Finding the Fourth Proportional to 668,908.60, 1,003,362.90 and 269,740.60

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Solution

The fourth proportional to 668,908.60, 1,003,362.90 and 269,740.60 is: 404,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,908.60 : 1,003,362.90 = 269,740.60 : x
  2. Step 2: Convert to fraction form
    668,908.60/1,003,362.90 = 269,740.60/x
  3. Step 3: Cross multiply
    668,908.60x = 1,003,362.90 × 269,740.60
  4. Step 4: Simplify right side
    668,908.60x = 270,647,710,663.74
  5. Step 5: Solve for x
    x = 270,647,710,663.74/668,908.60
  6. Step 6: Final answer
    x = 404,610.90

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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.