Finding the Fourth Proportional to 3,611,816.20, 5,385,891.20 and 3,579,438.88
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Solution
The fourth proportional to 3,611,816.20, 5,385,891.20 and 3,579,438.88 is: 5,337,610.58
Step by Step Solution
- Step 1: Write the proportion equation
3,611,816.20 : 5,385,891.20 = 3,579,438.88 : x - Step 2: Convert to fraction form
3,611,816.20/5,385,891.20 = 3,579,438.88/x - Step 3: Cross multiply
3,611,816.20x = 5,385,891.20 × 3,579,438.88 - Step 4: Simplify right side
3,611,816.20x = 19,278,468,364,729.86 - Step 5: Solve for x
x = 19,278,468,364,729.86/3,611,816.20 - Step 6: Final answer
x = 5,337,610.58
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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.