Finding the Fourth Proportional to 4,987,455.12, 6,882,550.20 and 2,811,979.26
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Solution
The fourth proportional to 4,987,455.12, 6,882,550.20 and 2,811,979.26 is: 3,880,453.65
Step by Step Solution
- Step 1: Write the proportion equation
4,987,455.12 : 6,882,550.20 = 2,811,979.26 : x - Step 2: Convert to fraction form
4,987,455.12/6,882,550.20 = 2,811,979.26/x - Step 3: Cross multiply
4,987,455.12x = 6,882,550.20 × 2,811,979.26 - Step 4: Simplify right side
4,987,455.12x = 19,353,588,418,308.85 - Step 5: Solve for x
x = 19,353,588,418,308.85/4,987,455.12 - Step 6: Final answer
x = 3,880,453.65
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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.