Finding the Fourth Proportional to 440,108,908.20, 660,163,362.30 and 394,192,405.80
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Solution
The fourth proportional to 440,108,908.20, 660,163,362.30 and 394,192,405.80 is: 591,288,608.70
Step by Step Solution
- Step 1: Write the proportion equation
440,108,908.20 : 660,163,362.30 = 394,192,405.80 : x - Step 2: Convert to fraction form
440,108,908.20/660,163,362.30 = 394,192,405.80/x - Step 3: Cross multiply
440,108,908.20x = 660,163,362.30 × 394,192,405.80 - Step 4: Simplify right side
440,108,908.20x = 260,231,384,006,054,016 - Step 5: Solve for x
x = 260,231,384,006,054,016/440,108,908.20 - Step 6: Final answer
x = 591,288,608.70
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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.