Finding the Fourth Proportional to 1,891,026.84, 2,821,791.21 and 1,687,221.84
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Solution
The fourth proportional to 1,891,026.84, 2,821,791.21 and 1,687,221.84 is: 2,517,673.29
Step by Step Solution
- Step 1: Write the proportion equation
1,891,026.84 : 2,821,791.21 = 1,687,221.84 : x - Step 2: Convert to fraction form
1,891,026.84/2,821,791.21 = 1,687,221.84/x - Step 3: Cross multiply
1,891,026.84x = 2,821,791.21 × 1,687,221.84 - Step 4: Simplify right side
1,891,026.84x = 4,760,987,757,432.03 - Step 5: Solve for x
x = 4,760,987,757,432.03/1,891,026.84 - Step 6: Final answer
x = 2,517,673.29
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.