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Finding the Fourth Proportional to 490,999.69, 677,416.66 and 400,199.50

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Solution

The fourth proportional to 490,999.69, 677,416.66 and 400,199.50 is: 552,142.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,999.69 : 677,416.66 = 400,199.50 : x
  2. Step 2: Convert to fraction form
    490,999.69/677,416.66 = 400,199.50/x
  3. Step 3: Cross multiply
    490,999.69x = 677,416.66 × 400,199.50
  4. Step 4: Simplify right side
    490,999.69x = 271,101,808,623.67
  5. Step 5: Solve for x
    x = 271,101,808,623.67/490,999.69
  6. Step 6: Final answer
    x = 552,142.53

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