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Finding the Fourth Proportional to 408,923,809.80, 613,385,714.70 and 245,665,134.60

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Solution

The fourth proportional to 408,923,809.80, 613,385,714.70 and 245,665,134.60 is: 368,497,701.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,923,809.80 : 613,385,714.70 = 245,665,134.60 : x
  2. Step 2: Convert to fraction form
    408,923,809.80/613,385,714.70 = 245,665,134.60/x
  3. Step 3: Cross multiply
    408,923,809.80x = 613,385,714.70 × 245,665,134.60
  4. Step 4: Simplify right side
    408,923,809.80x = 150,687,484,163,492,704
  5. Step 5: Solve for x
    x = 150,687,484,163,492,704/408,923,809.80
  6. Step 6: Final answer
    x = 368,497,701.90

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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.