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Finding the Fourth Proportional to 978,327.20, 1,467,490.80 and 838,359.20

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Solution

The fourth proportional to 978,327.20, 1,467,490.80 and 838,359.20 is: 1,257,538.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,327.20 : 1,467,490.80 = 838,359.20 : x
  2. Step 2: Convert to fraction form
    978,327.20/1,467,490.80 = 838,359.20/x
  3. Step 3: Cross multiply
    978,327.20x = 1,467,490.80 × 838,359.20
  4. Step 4: Simplify right side
    978,327.20x = 1,230,284,413,095.36
  5. Step 5: Solve for x
    x = 1,230,284,413,095.36/978,327.20
  6. Step 6: Final answer
    x = 1,257,538.80

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