Finding the Fourth Proportional to 7,939,825,866.39, 11,911,514,993.51 and 2,419,515,939.99
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Solution
The fourth proportional to 7,939,825,866.39, 11,911,514,993.51 and 2,419,515,939.99 is: 3,629,815,172.42
Step by Step Solution
- Step 1: Write the proportion equation
7,939,825,866.39 : 11,911,514,993.51 = 2,419,515,939.99 : x - Step 2: Convert to fraction form
7,939,825,866.39/11,911,514,993.51 = 2,419,515,939.99/x - Step 3: Cross multiply
7,939,825,866.39x = 11,911,514,993.51 × 2,419,515,939.99 - Step 4: Simplify right side
7,939,825,866.39x = 28,820,100,396,215,222,272 - Step 5: Solve for x
x = 28,820,100,396,215,222,272/7,939,825,866.39 - Step 6: Final answer
x = 3,629,815,172.42
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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.