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Finding the Fourth Proportional to 542,660.75, 748,871.84 and 300,980.33

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Solution

The fourth proportional to 542,660.75, 748,871.84 and 300,980.33 is: 415,352.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,660.75 : 748,871.84 = 300,980.33 : x
  2. Step 2: Convert to fraction form
    542,660.75/748,871.84 = 300,980.33/x
  3. Step 3: Cross multiply
    542,660.75x = 748,871.84 × 300,980.33
  4. Step 4: Simplify right side
    542,660.75x = 225,395,692,026.01
  5. Step 5: Solve for x
    x = 225,395,692,026.01/542,660.75
  6. Step 6: Final answer
    x = 415,352.86

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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.