Finding the Fourth Proportional to 12,393,079.20, 18,589,618.80 and 3,295,159.20
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Solution
The fourth proportional to 12,393,079.20, 18,589,618.80 and 3,295,159.20 is: 4,942,738.80
Step by Step Solution
- Step 1: Write the proportion equation
12,393,079.20 : 18,589,618.80 = 3,295,159.20 : x - Step 2: Convert to fraction form
12,393,079.20/18,589,618.80 = 3,295,159.20/x - Step 3: Cross multiply
12,393,079.20x = 18,589,618.80 × 3,295,159.20 - Step 4: Simplify right side
12,393,079.20x = 61,255,753,413,312.97 - Step 5: Solve for x
x = 61,255,753,413,312.97/12,393,079.20 - Step 6: Final answer
x = 4,942,738.80
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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.