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Finding the Fourth Proportional to 661,987.20, 993,391.20 and 346,670.40

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Solution

The fourth proportional to 661,987.20, 993,391.20 and 346,670.40 is: 520,220.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,987.20 : 993,391.20 = 346,670.40 : x
  2. Step 2: Convert to fraction form
    661,987.20/993,391.20 = 346,670.40/x
  3. Step 3: Cross multiply
    661,987.20x = 993,391.20 × 346,670.40
  4. Step 4: Simplify right side
    661,987.20x = 344,379,324,660.48
  5. Step 5: Solve for x
    x = 344,379,324,660.48/661,987.20
  6. Step 6: Final answer
    x = 520,220.52

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