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Finding the Fourth Proportional to 489,693.06, 675,126.78 and 319,631.94

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Solution

The fourth proportional to 489,693.06, 675,126.78 and 319,631.94 is: 440,668.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,693.06 : 675,126.78 = 319,631.94 : x
  2. Step 2: Convert to fraction form
    489,693.06/675,126.78 = 319,631.94/x
  3. Step 3: Cross multiply
    489,693.06x = 675,126.78 × 319,631.94
  4. Step 4: Simplify right side
    489,693.06x = 215,792,082,437.35
  5. Step 5: Solve for x
    x = 215,792,082,437.35/489,693.06
  6. Step 6: Final answer
    x = 440,668.04

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