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Finding the Fourth Proportional to 398,573,786.40, 597,860,679.60 and 244,720,960.80

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Solution

The fourth proportional to 398,573,786.40, 597,860,679.60 and 244,720,960.80 is: 367,081,441.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,573,786.40 : 597,860,679.60 = 244,720,960.80 : x
  2. Step 2: Convert to fraction form
    398,573,786.40/597,860,679.60 = 244,720,960.80/x
  3. Step 3: Cross multiply
    398,573,786.40x = 597,860,679.60 × 244,720,960.80
  4. Step 4: Simplify right side
    398,573,786.40x = 146,309,039,936,252,960
  5. Step 5: Solve for x
    x = 146,309,039,936,252,960/398,573,786.40
  6. Step 6: Final answer
    x = 367,081,441.20

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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.