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Finding the Fourth Proportional to 639,076.23, 958,375.13 and 274,291.79

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Solution

The fourth proportional to 639,076.23, 958,375.13 and 274,291.79 is: 411,335.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,076.23 : 958,375.13 = 274,291.79 : x
  2. Step 2: Convert to fraction form
    639,076.23/958,375.13 = 274,291.79/x
  3. Step 3: Cross multiply
    639,076.23x = 958,375.13 × 274,291.79
  4. Step 4: Simplify right side
    639,076.23x = 262,874,423,735.85
  5. Step 5: Solve for x
    x = 262,874,423,735.85/639,076.23
  6. Step 6: Final answer
    x = 411,335.00

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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.