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Finding the Fourth Proportional to 483,078.52, 721,364.81 and 394,507.72

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Solution

The fourth proportional to 483,078.52, 721,364.81 and 394,507.72 is: 589,105.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,078.52 : 721,364.81 = 394,507.72 : x
  2. Step 2: Convert to fraction form
    483,078.52/721,364.81 = 394,507.72/x
  3. Step 3: Cross multiply
    483,078.52x = 721,364.81 × 394,507.72
  4. Step 4: Simplify right side
    483,078.52x = 284,583,986,481.33
  5. Step 5: Solve for x
    x = 284,583,986,481.33/483,078.52
  6. Step 6: Final answer
    x = 589,105.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.