Finding the Fourth Proportional to 12,256,531.80, 18,384,797.70 and 4,178,628.60
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Solution
The fourth proportional to 12,256,531.80, 18,384,797.70 and 4,178,628.60 is: 6,267,942.90
Step by Step Solution
- Step 1: Write the proportion equation
12,256,531.80 : 18,384,797.70 = 4,178,628.60 : x - Step 2: Convert to fraction form
12,256,531.80/18,384,797.70 = 4,178,628.60/x - Step 3: Cross multiply
12,256,531.80x = 18,384,797.70 × 4,178,628.60 - Step 4: Simplify right side
12,256,531.80x = 76,823,241,474,434.22 - Step 5: Solve for x
x = 76,823,241,474,434.22/12,256,531.80 - Step 6: Final answer
x = 6,267,942.90
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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.