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Finding the Fourth Proportional to 619,270.72, 854,583.31 and 361,297.67

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Solution

The fourth proportional to 619,270.72, 854,583.31 and 361,297.67 is: 498,584.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,270.72 : 854,583.31 = 361,297.67 : x
  2. Step 2: Convert to fraction form
    619,270.72/854,583.31 = 361,297.67/x
  3. Step 3: Cross multiply
    619,270.72x = 854,583.31 × 361,297.67
  4. Step 4: Simplify right side
    619,270.72x = 308,758,954,902.59
  5. Step 5: Solve for x
    x = 308,758,954,902.59/619,270.72
  6. Step 6: Final answer
    x = 498,584.78

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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.