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Finding the Fourth Proportional to 652,136.40, 978,690.60 and 336,430.80

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Solution

The fourth proportional to 652,136.40, 978,690.60 and 336,430.80 is: 504,896.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,136.40 : 978,690.60 = 336,430.80 : x
  2. Step 2: Convert to fraction form
    652,136.40/978,690.60 = 336,430.80/x
  3. Step 3: Cross multiply
    652,136.40x = 978,690.60 × 336,430.80
  4. Step 4: Simplify right side
    652,136.40x = 329,261,661,510.48
  5. Step 5: Solve for x
    x = 329,261,661,510.48/652,136.40
  6. Step 6: Final answer
    x = 504,896.92

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