Home / 642,713.10-886,972.07-356,233.41

Finding the Fourth Proportional to 642,713.10, 886,972.07 and 356,233.41

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Solution

The fourth proportional to 642,713.10, 886,972.07 and 356,233.41 is: 491,617.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,713.10 : 886,972.07 = 356,233.41 : x
  2. Step 2: Convert to fraction form
    642,713.10/886,972.07 = 356,233.41/x
  3. Step 3: Cross multiply
    642,713.10x = 886,972.07 × 356,233.41
  4. Step 4: Simplify right side
    642,713.10x = 315,969,083,289.69
  5. Step 5: Solve for x
    x = 315,969,083,289.69/642,713.10
  6. Step 6: Final answer
    x = 491,617.62

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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.