Finding the Fourth Proportional to 3,987,353.16, 5,500,908.99 and 2,957,394.96
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Solution
The fourth proportional to 3,987,353.16, 5,500,908.99 and 2,957,394.96 is: 4,079,989.88
Step by Step Solution
- Step 1: Write the proportion equation
3,987,353.16 : 5,500,908.99 = 2,957,394.96 : x - Step 2: Convert to fraction form
3,987,353.16/5,500,908.99 = 2,957,394.96/x - Step 3: Cross multiply
3,987,353.16x = 5,500,908.99 × 2,957,394.96 - Step 4: Simplify right side
3,987,353.16x = 16,268,360,522,444.69 - Step 5: Solve for x
x = 16,268,360,522,444.69/3,987,353.16 - Step 6: Final answer
x = 4,079,989.88
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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.