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Finding the Fourth Proportional to 542,613.56, 748,851.61 and 300,974.21

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Solution

The fourth proportional to 542,613.56, 748,851.61 and 300,974.21 is: 415,369.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,613.56 : 748,851.61 = 300,974.21 : x
  2. Step 2: Convert to fraction form
    542,613.56/748,851.61 = 300,974.21/x
  3. Step 3: Cross multiply
    542,613.56x = 748,851.61 × 300,974.21
  4. Step 4: Simplify right side
    542,613.56x = 225,385,021,726.98
  5. Step 5: Solve for x
    x = 225,385,021,726.98/542,613.56
  6. Step 6: Final answer
    x = 415,369.31

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1.5x scale

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.