Finding the Fourth Proportional to 1,257,361.21, 1,876,913.29 and 1,163,689.57
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Solution
The fourth proportional to 1,257,361.21, 1,876,913.29 and 1,163,689.57 is: 1,737,085.89
Step by Step Solution
- Step 1: Write the proportion equation
1,257,361.21 : 1,876,913.29 = 1,163,689.57 : x - Step 2: Convert to fraction form
1,257,361.21/1,876,913.29 = 1,163,689.57/x - Step 3: Cross multiply
1,257,361.21x = 1,876,913.29 × 1,163,689.57 - Step 4: Simplify right side
1,257,361.21x = 2,184,144,419,367.39 - Step 5: Solve for x
x = 2,184,144,419,367.39/1,257,361.21 - Step 6: Final answer
x = 1,737,085.89
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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.