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Finding the Fourth Proportional to 668,013.62, 921,839.73 and 381,527.78

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Solution

The fourth proportional to 668,013.62, 921,839.73 and 381,527.78 is: 526,497.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,013.62 : 921,839.73 = 381,527.78 : x
  2. Step 2: Convert to fraction form
    668,013.62/921,839.73 = 381,527.78/x
  3. Step 3: Cross multiply
    668,013.62x = 921,839.73 × 381,527.78
  4. Step 4: Simplify right side
    668,013.62x = 351,707,465,702.70
  5. Step 5: Solve for x
    x = 351,707,465,702.70/668,013.62
  6. Step 6: Final answer
    x = 526,497.45

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