Finding the Fourth Proportional to 1,240,491.11, 1,860,785.87 and 388,135.40
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Solution
The fourth proportional to 1,240,491.11, 1,860,785.87 and 388,135.40 is: 582,218.49
Step by Step Solution
- Step 1: Write the proportion equation
1,240,491.11 : 1,860,785.87 = 388,135.40 : x - Step 2: Convert to fraction form
1,240,491.11/1,860,785.87 = 388,135.40/x - Step 3: Cross multiply
1,240,491.11x = 1,860,785.87 × 388,135.40 - Step 4: Simplify right side
1,240,491.11x = 722,236,856,722.19 - Step 5: Solve for x
x = 722,236,856,722.19/1,240,491.11 - Step 6: Final answer
x = 582,218.49
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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.