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Finding the Fourth Proportional to 542,574.18, 748,790.73 and 300,879.90

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Solution

The fourth proportional to 542,574.18, 748,790.73 and 300,879.90 is: 415,235.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,574.18 : 748,790.73 = 300,879.90 : x
  2. Step 2: Convert to fraction form
    542,574.18/748,790.73 = 300,879.90/x
  3. Step 3: Cross multiply
    542,574.18x = 748,790.73 × 300,879.90
  4. Step 4: Simplify right side
    542,574.18x = 225,296,079,963.33
  5. Step 5: Solve for x
    x = 225,296,079,963.33/542,574.18
  6. Step 6: Final answer
    x = 415,235.54

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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.