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Finding the Fourth Proportional to 661,704.60, 992,556.90 and 409,762.20

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Solution

The fourth proportional to 661,704.60, 992,556.90 and 409,762.20 is: 614,643.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,704.60 : 992,556.90 = 409,762.20 : x
  2. Step 2: Convert to fraction form
    661,704.60/992,556.90 = 409,762.20/x
  3. Step 3: Cross multiply
    661,704.60x = 992,556.90 × 409,762.20
  4. Step 4: Simplify right side
    661,704.60x = 406,712,298,969.18
  5. Step 5: Solve for x
    x = 406,712,298,969.18/661,704.60
  6. Step 6: Final answer
    x = 614,643.30

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