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Finding the Fourth Proportional to 404,994.20, 607,005.30 and 278,634.20

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Solution

The fourth proportional to 404,994.20, 607,005.30 and 278,634.20 is: 417,616.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,994.20 : 607,005.30 = 278,634.20 : x
  2. Step 2: Convert to fraction form
    404,994.20/607,005.30 = 278,634.20/x
  3. Step 3: Cross multiply
    404,994.20x = 607,005.30 × 278,634.20
  4. Step 4: Simplify right side
    404,994.20x = 169,132,436,161.26
  5. Step 5: Solve for x
    x = 169,132,436,161.26/404,994.20
  6. Step 6: Final answer
    x = 417,616.93

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