Finding the Fourth Proportional to 3,831,615.24, 5,287,358.61 and 2,112,699.12
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Solution
The fourth proportional to 3,831,615.24, 5,287,358.61 and 2,112,699.12 is: 2,915,375.68
Step by Step Solution
- Step 1: Write the proportion equation
3,831,615.24 : 5,287,358.61 = 2,112,699.12 : x - Step 2: Convert to fraction form
3,831,615.24/5,287,358.61 = 2,112,699.12/x - Step 3: Cross multiply
3,831,615.24x = 5,287,358.61 × 2,112,699.12 - Step 4: Simplify right side
3,831,615.24x = 11,170,597,882,471.42 - Step 5: Solve for x
x = 11,170,597,882,471.42/3,831,615.24 - Step 6: Final answer
x = 2,915,375.68
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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.