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Finding the Fourth Proportional to 393,146.73, 588,855.69 and 324,905.36

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Solution

The fourth proportional to 393,146.73, 588,855.69 and 324,905.36 is: 486,643.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,146.73 : 588,855.69 = 324,905.36 : x
  2. Step 2: Convert to fraction form
    393,146.73/588,855.69 = 324,905.36/x
  3. Step 3: Cross multiply
    393,146.73x = 588,855.69 × 324,905.36
  4. Step 4: Simplify right side
    393,146.73x = 191,322,367,003.22
  5. Step 5: Solve for x
    x = 191,322,367,003.22/393,146.73
  6. Step 6: Final answer
    x = 486,643.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.