Finding the Fourth Proportional to 8,201,976.80, 12,302,965.20 and 3,419,007.80
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Solution
The fourth proportional to 8,201,976.80, 12,302,965.20 and 3,419,007.80 is: 5,128,511.70
Step by Step Solution
- Step 1: Write the proportion equation
8,201,976.80 : 12,302,965.20 = 3,419,007.80 : x - Step 2: Convert to fraction form
8,201,976.80/12,302,965.20 = 3,419,007.80/x - Step 3: Cross multiply
8,201,976.80x = 12,302,965.20 × 3,419,007.80 - Step 4: Simplify right side
8,201,976.80x = 42,063,933,981,928.55 - Step 5: Solve for x
x = 42,063,933,981,928.55/8,201,976.80 - Step 6: Final answer
x = 5,128,511.70
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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.