Finding the Fourth Proportional to 2,311,396.88, 3,189,821.70 and 1,278,887.87
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Solution
The fourth proportional to 2,311,396.88, 3,189,821.70 and 1,278,887.87 is: 1,764,917.27
Step by Step Solution
- Step 1: Write the proportion equation
2,311,396.88 : 3,189,821.70 = 1,278,887.87 : x - Step 2: Convert to fraction form
2,311,396.88/3,189,821.70 = 1,278,887.87/x - Step 3: Cross multiply
2,311,396.88x = 3,189,821.70 × 1,278,887.87 - Step 4: Simplify right side
2,311,396.88x = 4,079,424,257,249.23 - Step 5: Solve for x
x = 4,079,424,257,249.23/2,311,396.88 - Step 6: Final answer
x = 1,764,917.27
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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.