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Finding the Fourth Proportional to 667,174.44, 920,327.22 and 394,976.76

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Solution

The fourth proportional to 667,174.44, 920,327.22 and 394,976.76 is: 544,846.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,174.44 : 920,327.22 = 394,976.76 : x
  2. Step 2: Convert to fraction form
    667,174.44/920,327.22 = 394,976.76/x
  3. Step 3: Cross multiply
    667,174.44x = 920,327.22 × 394,976.76
  4. Step 4: Simplify right side
    667,174.44x = 363,507,863,495.41
  5. Step 5: Solve for x
    x = 363,507,863,495.41/667,174.44
  6. Step 6: Final answer
    x = 544,846.81

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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.