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Finding the Fourth Proportional to 486,942.07, 672,410.94 and 303,493.73

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Solution

The fourth proportional to 486,942.07, 672,410.94 and 303,493.73 is: 419,089.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,942.07 : 672,410.94 = 303,493.73 : x
  2. Step 2: Convert to fraction form
    486,942.07/672,410.94 = 303,493.73/x
  3. Step 3: Cross multiply
    486,942.07x = 672,410.94 × 303,493.73
  4. Step 4: Simplify right side
    486,942.07x = 204,072,502,847.49
  5. Step 5: Solve for x
    x = 204,072,502,847.49/486,942.07
  6. Step 6: Final answer
    x = 419,089.89

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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.