Finding the Fourth Proportional to 8,994,872.21, 12,412,939.97 and 4,920,491.21
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Solution
The fourth proportional to 8,994,872.21, 12,412,939.97 and 4,920,491.21 is: 6,790,286.80
Step by Step Solution
- Step 1: Write the proportion equation
8,994,872.21 : 12,412,939.97 = 4,920,491.21 : x - Step 2: Convert to fraction form
8,994,872.21/12,412,939.97 = 4,920,491.21/x - Step 3: Cross multiply
8,994,872.21x = 12,412,939.97 × 4,920,491.21 - Step 4: Simplify right side
8,994,872.21x = 61,077,761,962,879.20 - Step 5: Solve for x
x = 61,077,761,962,879.20/8,994,872.21 - Step 6: Final answer
x = 6,790,286.80
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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.