Finding the Fourth Proportional to 20,212,416,163.70, 30,318,624,245.55 and 7,121,862,307.70
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Solution
The fourth proportional to 20,212,416,163.70, 30,318,624,245.55 and 7,121,862,307.70 is: 10,682,793,461.55
Step by Step Solution
- Step 1: Write the proportion equation
20,212,416,163.70 : 30,318,624,245.55 = 7,121,862,307.70 : x - Step 2: Convert to fraction form
20,212,416,163.70/30,318,624,245.55 = 7,121,862,307.70/x - Step 3: Cross multiply
20,212,416,163.70x = 30,318,624,245.55 × 7,121,862,307.70 - Step 4: Simplify right side
20,212,416,163.70x = 215,925,067,235,701,882,880 - Step 5: Solve for x
x = 215,925,067,235,701,882,880/20,212,416,163.70 - Step 6: Final answer
x = 10,682,793,461.55
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1.5x scale
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.