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Finding the Fourth Proportional to 611,793.20, 917,689.80 and 442,956.80

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Solution

The fourth proportional to 611,793.20, 917,689.80 and 442,956.80 is: 664,435.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,793.20 : 917,689.80 = 442,956.80 : x
  2. Step 2: Convert to fraction form
    611,793.20/917,689.80 = 442,956.80/x
  3. Step 3: Cross multiply
    611,793.20x = 917,689.80 × 442,956.80
  4. Step 4: Simplify right side
    611,793.20x = 406,496,937,200.64
  5. Step 5: Solve for x
    x = 406,496,937,200.64/611,793.20
  6. Step 6: Final answer
    x = 664,435.20

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