Finding the Fourth Proportional to 2,085,910.78, 3,129,765.21 and 1,126,175.80
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Solution
The fourth proportional to 2,085,910.78, 3,129,765.21 and 1,126,175.80 is: 1,689,749.09
Step by Step Solution
- Step 1: Write the proportion equation
2,085,910.78 : 3,129,765.21 = 1,126,175.80 : x - Step 2: Convert to fraction form
2,085,910.78/3,129,765.21 = 1,126,175.80/x - Step 3: Cross multiply
2,085,910.78x = 3,129,765.21 × 1,126,175.80 - Step 4: Simplify right side
2,085,910.78x = 3,524,665,839,183.92 - Step 5: Solve for x
x = 3,524,665,839,183.92/2,085,910.78 - Step 6: Final answer
x = 1,689,749.09
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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.