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Finding the Fourth Proportional to 678,076.48, 935,757.42 and 372,181.48

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Solution

The fourth proportional to 678,076.48, 935,757.42 and 372,181.48 is: 513,616.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,076.48 : 935,757.42 = 372,181.48 : x
  2. Step 2: Convert to fraction form
    678,076.48/935,757.42 = 372,181.48/x
  3. Step 3: Cross multiply
    678,076.48x = 935,757.42 × 372,181.48
  4. Step 4: Simplify right side
    678,076.48x = 348,271,581,496.58
  5. Step 5: Solve for x
    x = 348,271,581,496.58/678,076.48
  6. Step 6: Final answer
    x = 513,616.96

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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.