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Finding the Fourth Proportional to 668,877.42, 922,989.93 and 396,898.50

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Solution

The fourth proportional to 668,877.42, 922,989.93 and 396,898.50 is: 547,683.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,877.42 : 922,989.93 = 396,898.50 : x
  2. Step 2: Convert to fraction form
    668,877.42/922,989.93 = 396,898.50/x
  3. Step 3: Cross multiply
    668,877.42x = 922,989.93 × 396,898.50
  4. Step 4: Simplify right side
    668,877.42x = 366,333,318,732.11
  5. Step 5: Solve for x
    x = 366,333,318,732.11/668,877.42
  6. Step 6: Final answer
    x = 547,683.79

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