Finding the Fourth Proportional to 324,198,625.80, 486,297,938.70 and 81,861,529.80
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Solution
The fourth proportional to 324,198,625.80, 486,297,938.70 and 81,861,529.80 is: 122,792,294.70
Step by Step Solution
- Step 1: Write the proportion equation
324,198,625.80 : 486,297,938.70 = 81,861,529.80 : x - Step 2: Convert to fraction form
324,198,625.80/486,297,938.70 = 81,861,529.80/x - Step 3: Cross multiply
324,198,625.80x = 486,297,938.70 × 81,861,529.80 - Step 4: Simplify right side
324,198,625.80x = 39,809,093,200,568,624 - Step 5: Solve for x
x = 39,809,093,200,568,624/324,198,625.80 - Step 6: Final answer
x = 122,792,294.70
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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.