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Finding the Fourth Proportional to 493,846.43, 681,472.71 and 289,905.66

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Solution

The fourth proportional to 493,846.43, 681,472.71 and 289,905.66 is: 400,049.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,846.43 : 681,472.71 = 289,905.66 : x
  2. Step 2: Convert to fraction form
    493,846.43/681,472.71 = 289,905.66/x
  3. Step 3: Cross multiply
    493,846.43x = 681,472.71 × 289,905.66
  4. Step 4: Simplify right side
    493,846.43x = 197,562,795,764.54
  5. Step 5: Solve for x
    x = 197,562,795,764.54/493,846.43
  6. Step 6: Final answer
    x = 400,049.06

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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.