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Finding the Fourth Proportional to 668,868.40, 1,003,335.42 and 269,455

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Solution

The fourth proportional to 668,868.40, 1,003,335.42 and 269,455 is: 404,195.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,868.40 : 1,003,335.42 = 269,455 : x
  2. Step 2: Convert to fraction form
    668,868.40/1,003,335.42 = 269,455/x
  3. Step 3: Cross multiply
    668,868.40x = 1,003,335.42 × 269,455
  4. Step 4: Simplify right side
    668,868.40x = 270,353,745,596.10
  5. Step 5: Solve for x
    x = 270,353,745,596.10/668,868.40
  6. Step 6: Final answer
    x = 404,195.72

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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.