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Finding the Fourth Proportional to 483,105.52, 721,405.06 and 394,534.72

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Solution

The fourth proportional to 483,105.52, 721,405.06 and 394,534.72 is: 589,145.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,105.52 : 721,405.06 = 394,534.72 : x
  2. Step 2: Convert to fraction form
    483,105.52/721,405.06 = 394,534.72/x
  3. Step 3: Cross multiply
    483,105.52x = 721,405.06 × 394,534.72
  4. Step 4: Simplify right side
    483,105.52x = 284,619,343,353.68
  5. Step 5: Solve for x
    x = 284,619,343,353.68/483,105.52
  6. Step 6: Final answer
    x = 589,145.29

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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.