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Finding the Fourth Proportional to 479,500.44, 661,796.37 and 285,920.61

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Solution

The fourth proportional to 479,500.44, 661,796.37 and 285,920.61 is: 394,621.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,500.44 : 661,796.37 = 285,920.61 : x
  2. Step 2: Convert to fraction form
    479,500.44/661,796.37 = 285,920.61/x
  3. Step 3: Cross multiply
    479,500.44x = 661,796.37 × 285,920.61
  4. Step 4: Simplify right side
    479,500.44x = 189,221,221,806.19
  5. Step 5: Solve for x
    x = 189,221,221,806.19/479,500.44
  6. Step 6: Final answer
    x = 394,621.58

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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.