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Finding the Fourth Proportional to 978,082.80, 1,467,988.20 and 578,223.60

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Solution

The fourth proportional to 978,082.80, 1,467,988.20 and 578,223.60 is: 867,846.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,082.80 : 1,467,988.20 = 578,223.60 : x
  2. Step 2: Convert to fraction form
    978,082.80/1,467,988.20 = 578,223.60/x
  3. Step 3: Cross multiply
    978,082.80x = 1,467,988.20 × 578,223.60
  4. Step 4: Simplify right side
    978,082.80x = 848,825,421,761.52
  5. Step 5: Solve for x
    x = 848,825,421,761.52/978,082.80
  6. Step 6: Final answer
    x = 867,846.18

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