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Finding the Fourth Proportional to 765,908, 1,056,977.36 and 479,336.48

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Solution

The fourth proportional to 765,908, 1,056,977.36 and 479,336.48 is: 661,499.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,908 : 1,056,977.36 = 479,336.48 : x
  2. Step 2: Convert to fraction form
    765,908/1,056,977.36 = 479,336.48/x
  3. Step 3: Cross multiply
    765,908x = 1,056,977.36 × 479,336.48
  4. Step 4: Simplify right side
    765,908x = 506,647,807,182.09
  5. Step 5: Solve for x
    x = 506,647,807,182.09/765,908
  6. Step 6: Final answer
    x = 661,499.56

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