Finding the Fourth Proportional to 3,987,670.24, 5,503,079.28 and 2,176,847.20
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Solution
The fourth proportional to 3,987,670.24, 5,503,079.28 and 2,176,847.20 is: 3,004,100.64
Step by Step Solution
- Step 1: Write the proportion equation
3,987,670.24 : 5,503,079.28 = 2,176,847.20 : x - Step 2: Convert to fraction form
3,987,670.24/5,503,079.28 = 2,176,847.20/x - Step 3: Cross multiply
3,987,670.24x = 5,503,079.28 × 2,176,847.20 - Step 4: Simplify right side
3,987,670.24x = 11,979,362,722,046.02 - Step 5: Solve for x
x = 11,979,362,722,046.02/3,987,670.24 - Step 6: Final answer
x = 3,004,100.64
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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.