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Finding the Fourth Proportional to 542,716.68, 748,911.72 and 300,976.56

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Solution

The fourth proportional to 542,716.68, 748,911.72 and 300,976.56 is: 415,326.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,716.68 : 748,911.72 = 300,976.56 : x
  2. Step 2: Convert to fraction form
    542,716.68/748,911.72 = 300,976.56/x
  3. Step 3: Cross multiply
    542,716.68x = 748,911.72 × 300,976.56
  4. Step 4: Simplify right side
    542,716.68x = 225,404,873,229.28
  5. Step 5: Solve for x
    x = 225,404,873,229.28/542,716.68
  6. Step 6: Final answer
    x = 415,326.97

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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.