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Finding the Fourth Proportional to 885,642.80, 1,328,248.20 and 254,490.80

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Solution

The fourth proportional to 885,642.80, 1,328,248.20 and 254,490.80 is: 381,674.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,642.80 : 1,328,248.20 = 254,490.80 : x
  2. Step 2: Convert to fraction form
    885,642.80/1,328,248.20 = 254,490.80/x
  3. Step 3: Cross multiply
    885,642.80x = 1,328,248.20 × 254,490.80
  4. Step 4: Simplify right side
    885,642.80x = 338,026,947,016.56
  5. Step 5: Solve for x
    x = 338,026,947,016.56/885,642.80
  6. Step 6: Final answer
    x = 381,674.13

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