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Finding the Fourth Proportional to 868,458.78, 1,302,625.76 and 269,404.40

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Solution

The fourth proportional to 868,458.78, 1,302,625.76 and 269,404.40 is: 404,087.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,458.78 : 1,302,625.76 = 269,404.40 : x
  2. Step 2: Convert to fraction form
    868,458.78/1,302,625.76 = 269,404.40/x
  3. Step 3: Cross multiply
    868,458.78x = 1,302,625.76 × 269,404.40
  4. Step 4: Simplify right side
    868,458.78x = 350,933,111,297.34
  5. Step 5: Solve for x
    x = 350,933,111,297.34/868,458.78
  6. Step 6: Final answer
    x = 404,087.24

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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.