Home / 642,589.10-886,808.26-356,103.04

Finding the Fourth Proportional to 642,589.10, 886,808.26 and 356,103.04

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Solution

The fourth proportional to 642,589.10, 886,808.26 and 356,103.04 is: 491,441.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,589.10 : 886,808.26 = 356,103.04 : x
  2. Step 2: Convert to fraction form
    642,589.10/886,808.26 = 356,103.04/x
  3. Step 3: Cross multiply
    642,589.10x = 886,808.26 × 356,103.04
  4. Step 4: Simplify right side
    642,589.10x = 315,795,117,283.11
  5. Step 5: Solve for x
    x = 315,795,117,283.11/642,589.10
  6. Step 6: Final answer
    x = 491,441.76

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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.