Finding the Fourth Proportional to 7,419,745.40, 11,129,618.10 and 6,687,537.80
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Solution
The fourth proportional to 7,419,745.40, 11,129,618.10 and 6,687,537.80 is: 10,031,306.70
Step by Step Solution
- Step 1: Write the proportion equation
7,419,745.40 : 11,129,618.10 = 6,687,537.80 : x - Step 2: Convert to fraction form
7,419,745.40/11,129,618.10 = 6,687,537.80/x - Step 3: Cross multiply
7,419,745.40x = 11,129,618.10 × 6,687,537.80 - Step 4: Simplify right side
7,419,745.40x = 74,429,741,743,314.17 - Step 5: Solve for x
x = 74,429,741,743,314.17/7,419,745.40 - Step 6: Final answer
x = 10,031,306.70
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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.