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Finding the Fourth Proportional to 408,560,528.80, 612,840,793.20 and 376,992,933.40

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Solution

The fourth proportional to 408,560,528.80, 612,840,793.20 and 376,992,933.40 is: 565,489,400.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,560,528.80 : 612,840,793.20 = 376,992,933.40 : x
  2. Step 2: Convert to fraction form
    408,560,528.80/612,840,793.20 = 376,992,933.40/x
  3. Step 3: Cross multiply
    408,560,528.80x = 612,840,793.20 × 376,992,933.40
  4. Step 4: Simplify right side
    408,560,528.80x = 231,036,648,335,650,784
  5. Step 5: Solve for x
    x = 231,036,648,335,650,784/408,560,528.80
  6. Step 6: Final answer
    x = 565,489,400.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.