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Finding the Fourth Proportional to 978,345.80, 1,467,518.70 and 659,481.20

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Solution

The fourth proportional to 978,345.80, 1,467,518.70 and 659,481.20 is: 989,221.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,345.80 : 1,467,518.70 = 659,481.20 : x
  2. Step 2: Convert to fraction form
    978,345.80/1,467,518.70 = 659,481.20/x
  3. Step 3: Cross multiply
    978,345.80x = 1,467,518.70 × 659,481.20
  4. Step 4: Simplify right side
    978,345.80x = 967,800,993,298.44
  5. Step 5: Solve for x
    x = 967,800,993,298.44/978,345.80
  6. Step 6: Final answer
    x = 989,221.80

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Why These Related Problems?

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