Finding the Fourth Proportional to 5,378,330.88, 7,421,908.10 and 2,930,891.99
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Solution
The fourth proportional to 5,378,330.88, 7,421,908.10 and 2,930,891.99 is: 4,044,528.21
Step by Step Solution
- Step 1: Write the proportion equation
5,378,330.88 : 7,421,908.10 = 2,930,891.99 : x - Step 2: Convert to fraction form
5,378,330.88/7,421,908.10 = 2,930,891.99/x - Step 3: Cross multiply
5,378,330.88x = 7,421,908.10 × 2,930,891.99 - Step 4: Simplify right side
5,378,330.88x = 21,752,810,949,042.12 - Step 5: Solve for x
x = 21,752,810,949,042.12/5,378,330.88 - Step 6: Final answer
x = 4,044,528.21
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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.