Finding the Fourth Proportional to 442,821.80, 664,232.70 and 419,493.80
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Solution
The fourth proportional to 442,821.80, 664,232.70 and 419,493.80 is: 629,240.70
Step by Step Solution
- Step 1: Write the proportion equation
442,821.80 : 664,232.70 = 419,493.80 : x - Step 2: Convert to fraction form
442,821.80/664,232.70 = 419,493.80/x - Step 3: Cross multiply
442,821.80x = 664,232.70 × 419,493.80 - Step 4: Simplify right side
442,821.80x = 278,641,499,407.26 - Step 5: Solve for x
x = 278,641,499,407.26/442,821.80 - Step 6: Final answer
x = 629,240.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.