Finding the Fourth Proportional to 3,702,406.40, 5,111,968.68 and 2,887,520.48
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Solution
The fourth proportional to 3,702,406.40, 5,111,968.68 and 2,887,520.48 is: 3,986,843.33
Step by Step Solution
- Step 1: Write the proportion equation
3,702,406.40 : 5,111,968.68 = 2,887,520.48 : x - Step 2: Convert to fraction form
3,702,406.40/5,111,968.68 = 2,887,520.48/x - Step 3: Cross multiply
3,702,406.40x = 5,111,968.68 × 2,887,520.48 - Step 4: Simplify right side
3,702,406.40x = 14,760,914,256,618.57 - Step 5: Solve for x
x = 14,760,914,256,618.57/3,702,406.40 - Step 6: Final answer
x = 3,986,843.33
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.