Finding the Fourth Proportional to 3,979,377.55, 5,491,238.56 and 2,236,770.05
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Solution
The fourth proportional to 3,979,377.55, 5,491,238.56 and 2,236,770.05 is: 3,086,572.67
Step by Step Solution
- Step 1: Write the proportion equation
3,979,377.55 : 5,491,238.56 = 2,236,770.05 : x - Step 2: Convert to fraction form
3,979,377.55/5,491,238.56 = 2,236,770.05/x - Step 3: Cross multiply
3,979,377.55x = 5,491,238.56 × 2,236,770.05 - Step 4: Simplify right side
3,979,377.55x = 12,282,637,974,959.21 - Step 5: Solve for x
x = 12,282,637,974,959.21/3,979,377.55 - Step 6: Final answer
x = 3,086,572.67
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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.