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Finding the Fourth Proportional to 489,002.57, 674,824.61 and 285,038.09

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Solution

The fourth proportional to 489,002.57, 674,824.61 and 285,038.09 is: 393,353.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,002.57 : 674,824.61 = 285,038.09 : x
  2. Step 2: Convert to fraction form
    489,002.57/674,824.61 = 285,038.09/x
  3. Step 3: Cross multiply
    489,002.57x = 674,824.61 × 285,038.09
  4. Step 4: Simplify right side
    489,002.57x = 192,350,717,919.40
  5. Step 5: Solve for x
    x = 192,350,717,919.40/489,002.57
  6. Step 6: Final answer
    x = 393,353.18

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