Home / 628,863.20-867,846.90-342,399.02

Finding the Fourth Proportional to 628,863.20, 867,846.90 and 342,399.02

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Solution

The fourth proportional to 628,863.20, 867,846.90 and 342,399.02 is: 472,519.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,863.20 : 867,846.90 = 342,399.02 : x
  2. Step 2: Convert to fraction form
    628,863.20/867,846.90 = 342,399.02/x
  3. Step 3: Cross multiply
    628,863.20x = 867,846.90 × 342,399.02
  4. Step 4: Simplify right side
    628,863.20x = 297,149,928,070.04
  5. Step 5: Solve for x
    x = 297,149,928,070.04/628,863.20
  6. Step 6: Final answer
    x = 472,519.19

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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.