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Finding the Fourth Proportional to 621,290.85, 857,386.48 and 349,356.37

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Solution

The fourth proportional to 621,290.85, 857,386.48 and 349,356.37 is: 482,114.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,290.85 : 857,386.48 = 349,356.37 : x
  2. Step 2: Convert to fraction form
    621,290.85/857,386.48 = 349,356.37/x
  3. Step 3: Cross multiply
    621,290.85x = 857,386.48 × 349,356.37
  4. Step 4: Simplify right side
    621,290.85x = 299,533,422,306.16
  5. Step 5: Solve for x
    x = 299,533,422,306.16/621,290.85
  6. Step 6: Final answer
    x = 482,114.66

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