Home / 427,579.11-641,589.98-310,219.11

Finding the Fourth Proportional to 427,579.11, 641,589.98 and 310,219.11

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Solution

The fourth proportional to 427,579.11, 641,589.98 and 310,219.11 is: 465,489.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,579.11 : 641,589.98 = 310,219.11 : x
  2. Step 2: Convert to fraction form
    427,579.11/641,589.98 = 310,219.11/x
  3. Step 3: Cross multiply
    427,579.11x = 641,589.98 × 310,219.11
  4. Step 4: Simplify right side
    427,579.11x = 199,033,471,029.42
  5. Step 5: Solve for x
    x = 199,033,471,029.42/427,579.11
  6. Step 6: Final answer
    x = 465,489.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.