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Finding the Fourth Proportional to 691,755.40, 954,477.28 and 419,966.40

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Solution

The fourth proportional to 691,755.40, 954,477.28 and 419,966.40 is: 579,465.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,755.40 : 954,477.28 = 419,966.40 : x
  2. Step 2: Convert to fraction form
    691,755.40/954,477.28 = 419,966.40/x
  3. Step 3: Cross multiply
    691,755.40x = 954,477.28 × 419,966.40
  4. Step 4: Simplify right side
    691,755.40x = 400,848,387,163.39
  5. Step 5: Solve for x
    x = 400,848,387,163.39/691,755.40
  6. Step 6: Final answer
    x = 579,465.50

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