Finding the Fourth Proportional to 12,215,296.80, 18,322,929.68 and 3,117,394.55
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Solution
The fourth proportional to 12,215,296.80, 18,322,929.68 and 3,117,394.55 is: 4,676,087.87
Step by Step Solution
- Step 1: Write the proportion equation
12,215,296.80 : 18,322,929.68 = 3,117,394.55 : x - Step 2: Convert to fraction form
12,215,296.80/18,322,929.68 = 3,117,394.55/x - Step 3: Cross multiply
12,215,296.80x = 18,322,929.68 × 3,117,394.55 - Step 4: Simplify right side
12,215,296.80x = 57,119,801,154,685.60 - Step 5: Solve for x
x = 57,119,801,154,685.60/12,215,296.80 - Step 6: Final answer
x = 4,676,087.87
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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.