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Finding the Fourth Proportional to 479,767, 662,136.78 and 278,563

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Solution

The fourth proportional to 479,767, 662,136.78 and 278,563 is: 384,450.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,767 : 662,136.78 = 278,563 : x
  2. Step 2: Convert to fraction form
    479,767/662,136.78 = 278,563/x
  3. Step 3: Cross multiply
    479,767x = 662,136.78 × 278,563
  4. Step 4: Simplify right side
    479,767x = 184,446,807,847.14
  5. Step 5: Solve for x
    x = 184,446,807,847.14/479,767
  6. Step 6: Final answer
    x = 384,450.80

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