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Finding the Fourth Proportional to 633,540.07, 874,278.34 and 343,144.43

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Solution

The fourth proportional to 633,540.07, 874,278.34 and 343,144.43 is: 473,535.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,540.07 : 874,278.34 = 343,144.43 : x
  2. Step 2: Convert to fraction form
    633,540.07/874,278.34 = 343,144.43/x
  3. Step 3: Cross multiply
    633,540.07x = 874,278.34 × 343,144.43
  4. Step 4: Simplify right side
    633,540.07x = 300,003,742,640.65
  5. Step 5: Solve for x
    x = 300,003,742,640.65/633,540.07
  6. Step 6: Final answer
    x = 473,535.55

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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.