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Finding the Fourth Proportional to 643,468.12, 887,997.74 and 353,094.66

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Solution

The fourth proportional to 643,468.12, 887,997.74 and 353,094.66 is: 487,277.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,468.12 : 887,997.74 = 353,094.66 : x
  2. Step 2: Convert to fraction form
    643,468.12/887,997.74 = 353,094.66/x
  3. Step 3: Cross multiply
    643,468.12x = 887,997.74 × 353,094.66
  4. Step 4: Simplify right side
    643,468.12x = 313,547,258,320.60
  5. Step 5: Solve for x
    x = 313,547,258,320.60/643,468.12
  6. Step 6: Final answer
    x = 487,277.07

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