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Finding the Fourth Proportional to 618,997.32, 854,251.34 and 347,152

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Solution

The fourth proportional to 618,997.32, 854,251.34 and 347,152 is: 479,089.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,997.32 : 854,251.34 = 347,152 : x
  2. Step 2: Convert to fraction form
    618,997.32/854,251.34 = 347,152/x
  3. Step 3: Cross multiply
    618,997.32x = 854,251.34 × 347,152
  4. Step 4: Simplify right side
    618,997.32x = 296,555,061,183.68
  5. Step 5: Solve for x
    x = 296,555,061,183.68/618,997.32
  6. Step 6: Final answer
    x = 479,089.41

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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.