Finding the Fourth Proportional to 1,324,910.70, 1,987,366.05 and 1,059,190.20
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Solution
The fourth proportional to 1,324,910.70, 1,987,366.05 and 1,059,190.20 is: 1,588,785.30
Step by Step Solution
- Step 1: Write the proportion equation
1,324,910.70 : 1,987,366.05 = 1,059,190.20 : x - Step 2: Convert to fraction form
1,324,910.70/1,987,366.05 = 1,059,190.20/x - Step 3: Cross multiply
1,324,910.70x = 1,987,366.05 × 1,059,190.20 - Step 4: Simplify right side
1,324,910.70x = 2,104,998,643,972.71 - Step 5: Solve for x
x = 2,104,998,643,972.71/1,324,910.70 - Step 6: Final answer
x = 1,588,785.30
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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.