Finding the Fourth Proportional to 2,161,396,513.44, 2,982,729,738.60 and 1,171,321,930.44
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Solution
The fourth proportional to 2,161,396,513.44, 2,982,729,738.60 and 1,171,321,930.44 is: 1,616,425,645.95
Step by Step Solution
- Step 1: Write the proportion equation
2,161,396,513.44 : 2,982,729,738.60 = 1,171,321,930.44 : x - Step 2: Convert to fraction form
2,161,396,513.44/2,982,729,738.60 = 1,171,321,930.44/x - Step 3: Cross multiply
2,161,396,513.44x = 2,982,729,738.60 × 1,171,321,930.44 - Step 4: Simplify right side
2,161,396,513.44x = 3,493,736,755,397,748,736 - Step 5: Solve for x
x = 3,493,736,755,397,748,736/2,161,396,513.44 - Step 6: Final answer
x = 1,616,425,645.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.