Home / 628,589.72-867,472.25-342,128.36

Finding the Fourth Proportional to 628,589.72, 867,472.25 and 342,128.36

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Solution

The fourth proportional to 628,589.72, 867,472.25 and 342,128.36 is: 472,147.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,589.72 : 867,472.25 = 342,128.36 : x
  2. Step 2: Convert to fraction form
    628,589.72/867,472.25 = 342,128.36/x
  3. Step 3: Cross multiply
    628,589.72x = 867,472.25 × 342,128.36
  4. Step 4: Simplify right side
    628,589.72x = 296,786,858,238.01
  5. Step 5: Solve for x
    x = 296,786,858,238.01/628,589.72
  6. Step 6: Final answer
    x = 472,147.17

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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.