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Finding the Fourth Proportional to 959,436, 1,324,138.32 and 557,028

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Solution

The fourth proportional to 959,436, 1,324,138.32 and 557,028 is: 768,766.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    959,436 : 1,324,138.32 = 557,028 : x
  2. Step 2: Convert to fraction form
    959,436/1,324,138.32 = 557,028/x
  3. Step 3: Cross multiply
    959,436x = 1,324,138.32 × 557,028
  4. Step 4: Simplify right side
    959,436x = 737,582,120,112.96
  5. Step 5: Solve for x
    x = 737,582,120,112.96/959,436
  6. Step 6: Final answer
    x = 768,766.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.