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Finding the Fourth Proportional to 665,503.56, 998,337.78 and 260,643.24

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Solution

The fourth proportional to 665,503.56, 998,337.78 and 260,643.24 is: 390,997.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,503.56 : 998,337.78 = 260,643.24 : x
  2. Step 2: Convert to fraction form
    665,503.56/998,337.78 = 260,643.24/x
  3. Step 3: Cross multiply
    665,503.56x = 998,337.78 × 260,643.24
  4. Step 4: Simplify right side
    665,503.56x = 260,209,993,593.61
  5. Step 5: Solve for x
    x = 260,209,993,593.61/665,503.56
  6. Step 6: Final answer
    x = 390,997.15

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