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Finding the Fourth Proportional to 542,708.59, 748,962.86 and 300,976.77

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Solution

The fourth proportional to 542,708.59, 748,962.86 and 300,976.77 is: 415,361.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,708.59 : 748,962.86 = 300,976.77 : x
  2. Step 2: Convert to fraction form
    542,708.59/748,962.86 = 300,976.77/x
  3. Step 3: Cross multiply
    542,708.59x = 748,962.86 × 300,976.77
  4. Step 4: Simplify right side
    542,708.59x = 225,420,422,452.76
  5. Step 5: Solve for x
    x = 225,420,422,452.76/542,708.59
  6. Step 6: Final answer
    x = 415,361.81

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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.