Finding the Fourth Proportional to 3,622,765,115.20, 5,431,277,891.40 and 1,986,989,717.20
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Solution
The fourth proportional to 3,622,765,115.20, 5,431,277,891.40 and 1,986,989,717.20 is: 2,978,910,577.50
Step by Step Solution
- Step 1: Write the proportion equation
3,622,765,115.20 : 5,431,277,891.40 = 1,986,989,717.20 : x - Step 2: Convert to fraction form
3,622,765,115.20/5,431,277,891.40 = 1,986,989,717.20/x - Step 3: Cross multiply
3,622,765,115.20x = 5,431,277,891.40 × 1,986,989,717.20 - Step 4: Simplify right side
3,622,765,115.20x = 10,791,893,321,467,498,496 - Step 5: Solve for x
x = 10,791,893,321,467,498,496/3,622,765,115.20 - Step 6: Final answer
x = 2,978,910,577.50
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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.