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Finding the Fourth Proportional to 611,605.80, 843,967.68 and 339,647.40

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Solution

The fourth proportional to 611,605.80, 843,967.68 and 339,647.40 is: 468,686.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,605.80 : 843,967.68 = 339,647.40 : x
  2. Step 2: Convert to fraction form
    611,605.80/843,967.68 = 339,647.40/x
  3. Step 3: Cross multiply
    611,605.80x = 843,967.68 × 339,647.40
  4. Step 4: Simplify right side
    611,605.80x = 286,651,428,196.03
  5. Step 5: Solve for x
    x = 286,651,428,196.03/611,605.80
  6. Step 6: Final answer
    x = 468,686.58

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