Finding the Fourth Proportional to 1,519,253,884.80, 2,278,561,958.28 and 428,481,861.12
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Solution
The fourth proportional to 1,519,253,884.80, 2,278,561,958.28 and 428,481,861.12 is: 642,632,859.67
Step by Step Solution
- Step 1: Write the proportion equation
1,519,253,884.80 : 2,278,561,958.28 = 428,481,861.12 : x - Step 2: Convert to fraction form
1,519,253,884.80/2,278,561,958.28 = 428,481,861.12/x - Step 3: Cross multiply
1,519,253,884.80x = 2,278,561,958.28 × 428,481,861.12 - Step 4: Simplify right side
1,519,253,884.80x = 976,322,468,561,046,272 - Step 5: Solve for x
x = 976,322,468,561,046,272/1,519,253,884.80 - Step 6: Final answer
x = 642,632,859.67
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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.