Finding the Fourth Proportional to 489,392,163.80, 734,088,245.70 and 343,989,906.20
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Solution
The fourth proportional to 489,392,163.80, 734,088,245.70 and 343,989,906.20 is: 515,984,859.30
Step by Step Solution
- Step 1: Write the proportion equation
489,392,163.80 : 734,088,245.70 = 343,989,906.20 : x - Step 2: Convert to fraction form
489,392,163.80/734,088,245.70 = 343,989,906.20/x - Step 3: Cross multiply
489,392,163.80x = 734,088,245.70 × 343,989,906.20 - Step 4: Simplify right side
489,392,163.80x = 252,518,946,780,865,568 - Step 5: Solve for x
x = 252,518,946,780,865,568/489,392,163.80 - Step 6: Final answer
x = 515,984,859.30
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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.