Finding the Fourth Proportional to 858,805.20, 1,288,207.80 and 297,839.70
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Solution
The fourth proportional to 858,805.20, 1,288,207.80 and 297,839.70 is: 446,759.55
Step by Step Solution
- Step 1: Write the proportion equation
858,805.20 : 1,288,207.80 = 297,839.70 : x - Step 2: Convert to fraction form
858,805.20/1,288,207.80 = 297,839.70/x - Step 3: Cross multiply
858,805.20x = 1,288,207.80 × 297,839.70 - Step 4: Simplify right side
858,805.20x = 383,679,424,689.66 - Step 5: Solve for x
x = 383,679,424,689.66/858,805.20 - Step 6: Final answer
x = 446,759.55
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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.