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Finding the Fourth Proportional to 658,428.34, 987,643.78 and 253,811.09

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Solution

The fourth proportional to 658,428.34, 987,643.78 and 253,811.09 is: 380,717.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,428.34 : 987,643.78 = 253,811.09 : x
  2. Step 2: Convert to fraction form
    658,428.34/987,643.78 = 253,811.09/x
  3. Step 3: Cross multiply
    658,428.34x = 987,643.78 × 253,811.09
  4. Step 4: Simplify right side
    658,428.34x = 250,674,943,892.13
  5. Step 5: Solve for x
    x = 250,674,943,892.13/658,428.34
  6. Step 6: Final answer
    x = 380,717.12

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