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Finding the Fourth Proportional to 680,904.08, 939,676.68 and 379,098

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Solution

The fourth proportional to 680,904.08, 939,676.68 and 379,098 is: 523,171.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,904.08 : 939,676.68 = 379,098 : x
  2. Step 2: Convert to fraction form
    680,904.08/939,676.68 = 379,098/x
  3. Step 3: Cross multiply
    680,904.08x = 939,676.68 × 379,098
  4. Step 4: Simplify right side
    680,904.08x = 356,229,550,034.64
  5. Step 5: Solve for x
    x = 356,229,550,034.64/680,904.08
  6. Step 6: Final answer
    x = 523,171.41

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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.