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Finding the Fourth Proportional to 663,954.48, 916,328.14 and 405,982.62

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Solution

The fourth proportional to 663,954.48, 916,328.14 and 405,982.62 is: 560,299.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,954.48 : 916,328.14 = 405,982.62 : x
  2. Step 2: Convert to fraction form
    663,954.48/916,328.14 = 405,982.62/x
  3. Step 3: Cross multiply
    663,954.48x = 916,328.14 × 405,982.62
  4. Step 4: Simplify right side
    663,954.48x = 372,013,298,041.97
  5. Step 5: Solve for x
    x = 372,013,298,041.97/663,954.48
  6. Step 6: Final answer
    x = 560,299.40

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