Finding the Fourth Proportional to 3,131,044.90, 4,288,466.84 and 2,947,205.68
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Solution
The fourth proportional to 3,131,044.90, 4,288,466.84 and 2,947,205.68 is: 4,036,669.62
Step by Step Solution
- Step 1: Write the proportion equation
3,131,044.90 : 4,288,466.84 = 2,947,205.68 : x - Step 2: Convert to fraction form
3,131,044.90/4,288,466.84 = 2,947,205.68/x - Step 3: Cross multiply
3,131,044.90x = 4,288,466.84 × 2,947,205.68 - Step 4: Simplify right side
3,131,044.90x = 12,638,993,803,882.46 - Step 5: Solve for x
x = 12,638,993,803,882.46/3,131,044.90 - Step 6: Final answer
x = 4,036,669.62
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.