Finding the Fourth Proportional to 2,268,921.21, 3,131,071.11 and 1,236,438.24
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Solution
The fourth proportional to 2,268,921.21, 3,131,071.11 and 1,236,438.24 is: 1,706,262.89
Step by Step Solution
- Step 1: Write the proportion equation
2,268,921.21 : 3,131,071.11 = 1,236,438.24 : x - Step 2: Convert to fraction form
2,268,921.21/3,131,071.11 = 1,236,438.24/x - Step 3: Cross multiply
2,268,921.21x = 3,131,071.11 × 1,236,438.24 - Step 4: Simplify right side
2,268,921.21x = 3,871,376,052,563.25 - Step 5: Solve for x
x = 3,871,376,052,563.25/2,268,921.21 - Step 6: Final answer
x = 1,706,262.89
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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.