Finding the Fourth Proportional to 5,121,942.60, 7,682,913.90 and 2,571,025.80
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Solution
The fourth proportional to 5,121,942.60, 7,682,913.90 and 2,571,025.80 is: 3,856,538.70
Step by Step Solution
- Step 1: Write the proportion equation
5,121,942.60 : 7,682,913.90 = 2,571,025.80 : x - Step 2: Convert to fraction form
5,121,942.60/7,682,913.90 = 2,571,025.80/x - Step 3: Cross multiply
5,121,942.60x = 7,682,913.90 × 2,571,025.80 - Step 4: Simplify right side
5,121,942.60x = 19,752,969,856,078.62 - Step 5: Solve for x
x = 19,752,969,856,078.62/5,121,942.60 - Step 6: Final answer
x = 3,856,538.70
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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.