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Finding the Fourth Proportional to 487,680.82, 672,627.45 and 419,809.30

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Solution

The fourth proportional to 487,680.82, 672,627.45 and 419,809.30 is: 579,016.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,680.82 : 672,627.45 = 419,809.30 : x
  2. Step 2: Convert to fraction form
    487,680.82/672,627.45 = 419,809.30/x
  3. Step 3: Cross multiply
    487,680.82x = 672,627.45 × 419,809.30
  4. Step 4: Simplify right side
    487,680.82x = 282,375,258,945.29
  5. Step 5: Solve for x
    x = 282,375,258,945.29/487,680.82
  6. Step 6: Final answer
    x = 579,016.54

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