Finding the Fourth Proportional to 858,757.20, 1,288,135.80 and 297,791.70
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Solution
The fourth proportional to 858,757.20, 1,288,135.80 and 297,791.70 is: 446,687.55
Step by Step Solution
- Step 1: Write the proportion equation
858,757.20 : 1,288,135.80 = 297,791.70 : x - Step 2: Convert to fraction form
858,757.20/1,288,135.80 = 297,791.70/x - Step 3: Cross multiply
858,757.20x = 1,288,135.80 × 297,791.70 - Step 4: Simplify right side
858,757.20x = 383,596,149,712.86 - Step 5: Solve for x
x = 383,596,149,712.86/858,757.20 - Step 6: Final answer
x = 446,687.55
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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.