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Finding the Fourth Proportional to 661,668.20, 992,502.30 and 346,221.80

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Solution

The fourth proportional to 661,668.20, 992,502.30 and 346,221.80 is: 519,332.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,668.20 : 992,502.30 = 346,221.80 : x
  2. Step 2: Convert to fraction form
    661,668.20/992,502.30 = 346,221.80/x
  3. Step 3: Cross multiply
    661,668.20x = 992,502.30 × 346,221.80
  4. Step 4: Simplify right side
    661,668.20x = 343,625,932,810.14
  5. Step 5: Solve for x
    x = 343,625,932,810.14/661,668.20
  6. Step 6: Final answer
    x = 519,332.70

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