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Finding the Fourth Proportional to 463,600.80, 695,401.20 and 285,530.40

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Solution

The fourth proportional to 463,600.80, 695,401.20 and 285,530.40 is: 428,295.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,600.80 : 695,401.20 = 285,530.40 : x
  2. Step 2: Convert to fraction form
    463,600.80/695,401.20 = 285,530.40/x
  3. Step 3: Cross multiply
    463,600.80x = 695,401.20 × 285,530.40
  4. Step 4: Simplify right side
    463,600.80x = 198,558,182,796.48
  5. Step 5: Solve for x
    x = 198,558,182,796.48/463,600.80
  6. Step 6: Final answer
    x = 428,295.60

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