Finding the Fourth Proportional to 1,330,375.90, 1,995,855.45 and 431,664.70
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Solution
The fourth proportional to 1,330,375.90, 1,995,855.45 and 431,664.70 is: 647,591.66
Step by Step Solution
- Step 1: Write the proportion equation
1,330,375.90 : 1,995,855.45 = 431,664.70 : x - Step 2: Convert to fraction form
1,330,375.90/1,995,855.45 = 431,664.70/x - Step 3: Cross multiply
1,330,375.90x = 1,995,855.45 × 431,664.70 - Step 4: Simplify right side
1,330,375.90x = 861,540,344,067.62 - Step 5: Solve for x
x = 861,540,344,067.62/1,330,375.90 - Step 6: Final answer
x = 647,591.66
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.