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Finding the Fourth Proportional to 393,401.07, 587,862.05 and 295,388.72

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Solution

The fourth proportional to 393,401.07, 587,862.05 and 295,388.72 is: 441,401.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,401.07 : 587,862.05 = 295,388.72 : x
  2. Step 2: Convert to fraction form
    393,401.07/587,862.05 = 295,388.72/x
  3. Step 3: Cross multiply
    393,401.07x = 587,862.05 × 295,388.72
  4. Step 4: Simplify right side
    393,401.07x = 173,647,815,546.77
  5. Step 5: Solve for x
    x = 173,647,815,546.77/393,401.07
  6. Step 6: Final answer
    x = 441,401.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.