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Finding the Fourth Proportional to 978,313.80, 1,467,470.70 and 659,449.20

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Solution

The fourth proportional to 978,313.80, 1,467,470.70 and 659,449.20 is: 989,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,313.80 : 1,467,470.70 = 659,449.20 : x
  2. Step 2: Convert to fraction form
    978,313.80/1,467,470.70 = 659,449.20/x
  3. Step 3: Cross multiply
    978,313.80x = 1,467,470.70 × 659,449.20
  4. Step 4: Simplify right side
    978,313.80x = 967,722,379,138.44
  5. Step 5: Solve for x
    x = 967,722,379,138.44/978,313.80
  6. Step 6: Final answer
    x = 989,173.80

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Why These Related Problems?

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