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Finding the Fourth Proportional to 591,430.28, 815,324.00 and 421,369.16

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Solution

The fourth proportional to 591,430.28, 815,324.00 and 421,369.16 is: 580,884.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,430.28 : 815,324.00 = 421,369.16 : x
  2. Step 2: Convert to fraction form
    591,430.28/815,324.00 = 421,369.16/x
  3. Step 3: Cross multiply
    591,430.28x = 815,324.00 × 421,369.16
  4. Step 4: Simplify right side
    591,430.28x = 343,552,382,824.37
  5. Step 5: Solve for x
    x = 343,552,382,824.37/591,430.28
  6. Step 6: Final answer
    x = 580,884.00

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