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Finding the Fourth Proportional to 463,488.80, 695,233.20 and 285,418.40

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Solution

The fourth proportional to 463,488.80, 695,233.20 and 285,418.40 is: 428,127.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,488.80 : 695,233.20 = 285,418.40 : x
  2. Step 2: Convert to fraction form
    463,488.80/695,233.20 = 285,418.40/x
  3. Step 3: Cross multiply
    463,488.80x = 695,233.20 × 285,418.40
  4. Step 4: Simplify right side
    463,488.80x = 198,432,347,570.88
  5. Step 5: Solve for x
    x = 198,432,347,570.88/463,488.80
  6. Step 6: Final answer
    x = 428,127.60

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