Finding the Fourth Proportional to 7,788,310.20, 11,682,465.30 and 2,738,964.60
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Solution
The fourth proportional to 7,788,310.20, 11,682,465.30 and 2,738,964.60 is: 4,108,446.90
Step by Step Solution
- Step 1: Write the proportion equation
7,788,310.20 : 11,682,465.30 = 2,738,964.60 : x - Step 2: Convert to fraction form
7,788,310.20/11,682,465.30 = 2,738,964.60/x - Step 3: Cross multiply
7,788,310.20x = 11,682,465.30 × 2,738,964.60 - Step 4: Simplify right side
7,788,310.20x = 31,997,858,897,428.38 - Step 5: Solve for x
x = 31,997,858,897,428.38/7,788,310.20 - Step 6: Final answer
x = 4,108,446.90
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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.