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Finding the Fourth Proportional to 668,804.13, 1,003,239 and 269,390.97

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Solution

The fourth proportional to 668,804.13, 1,003,239 and 269,390.97 is: 404,099.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,804.13 : 1,003,239 = 269,390.97 : x
  2. Step 2: Convert to fraction form
    668,804.13/1,003,239 = 269,390.97/x
  3. Step 3: Cross multiply
    668,804.13x = 1,003,239 × 269,390.97
  4. Step 4: Simplify right side
    668,804.13x = 270,263,527,351.83
  5. Step 5: Solve for x
    x = 270,263,527,351.83/668,804.13
  6. Step 6: Final answer
    x = 404,099.67

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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.