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Finding the Fourth Proportional to 540,729.75, 811,582.14 and 288,220.55

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Solution

The fourth proportional to 540,729.75, 811,582.14 and 288,220.55 is: 432,590.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,729.75 : 811,582.14 = 288,220.55 : x
  2. Step 2: Convert to fraction form
    540,729.75/811,582.14 = 288,220.55/x
  3. Step 3: Cross multiply
    540,729.75x = 811,582.14 × 288,220.55
  4. Step 4: Simplify right side
    540,729.75x = 233,914,650,760.98
  5. Step 5: Solve for x
    x = 233,914,650,760.98/540,729.75
  6. Step 6: Final answer
    x = 432,590.68

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