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Finding the Fourth Proportional to 418,061.40, 626,400.90 and 355,853.40

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Solution

The fourth proportional to 418,061.40, 626,400.90 and 355,853.40 is: 533,191.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,061.40 : 626,400.90 = 355,853.40 : x
  2. Step 2: Convert to fraction form
    418,061.40/626,400.90 = 355,853.40/x
  3. Step 3: Cross multiply
    418,061.40x = 626,400.90 × 355,853.40
  4. Step 4: Simplify right side
    418,061.40x = 222,906,890,028.06
  5. Step 5: Solve for x
    x = 222,906,890,028.06/418,061.40
  6. Step 6: Final answer
    x = 533,191.75

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