Home / 440,108,999.20-660,163,498.80-394,192,496.80

Finding the Fourth Proportional to 440,108,999.20, 660,163,498.80 and 394,192,496.80

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Solution

The fourth proportional to 440,108,999.20, 660,163,498.80 and 394,192,496.80 is: 591,288,745.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,108,999.20 : 660,163,498.80 = 394,192,496.80 : x
  2. Step 2: Convert to fraction form
    440,108,999.20/660,163,498.80 = 394,192,496.80/x
  3. Step 3: Cross multiply
    440,108,999.20x = 660,163,498.80 × 394,192,496.80
  4. Step 4: Simplify right side
    440,108,999.20x = 260,231,497,888,195,808
  5. Step 5: Solve for x
    x = 260,231,497,888,195,808/440,108,999.20
  6. Step 6: Final answer
    x = 591,288,745.20

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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.