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Finding the Fourth Proportional to 678,160.86, 935,843.49 and 372,236.82

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Solution

The fourth proportional to 678,160.86, 935,843.49 and 372,236.82 is: 513,676.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,160.86 : 935,843.49 = 372,236.82 : x
  2. Step 2: Convert to fraction form
    678,160.86/935,843.49 = 372,236.82/x
  3. Step 3: Cross multiply
    678,160.86x = 935,843.49 × 372,236.82
  4. Step 4: Simplify right side
    678,160.86x = 348,355,404,735.30
  5. Step 5: Solve for x
    x = 348,355,404,735.30/678,160.86
  6. Step 6: Final answer
    x = 513,676.66

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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.