Finding the Fourth Proportional to 2,138,540.40, 3,206,806.20 and 1,240,237.44
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Solution
The fourth proportional to 2,138,540.40, 3,206,806.20 and 1,240,237.44 is: 1,859,773.66
Step by Step Solution
- Step 1: Write the proportion equation
2,138,540.40 : 3,206,806.20 = 1,240,237.44 : x - Step 2: Convert to fraction form
2,138,540.40/3,206,806.20 = 1,240,237.44/x - Step 3: Cross multiply
2,138,540.40x = 3,206,806.20 × 1,240,237.44 - Step 4: Simplify right side
2,138,540.40x = 3,977,201,112,064.13 - Step 5: Solve for x
x = 3,977,201,112,064.13/2,138,540.40 - Step 6: Final answer
x = 1,859,773.66
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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.