Finding the Fourth Proportional to 5,279,703.12, 7,286,099.40 and 2,987,863.20
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Solution
The fourth proportional to 5,279,703.12, 7,286,099.40 and 2,987,863.20 is: 4,123,312.95
Step by Step Solution
- Step 1: Write the proportion equation
5,279,703.12 : 7,286,099.40 = 2,987,863.20 : x - Step 2: Convert to fraction form
5,279,703.12/7,286,099.40 = 2,987,863.20/x - Step 3: Cross multiply
5,279,703.12x = 7,286,099.40 × 2,987,863.20 - Step 4: Simplify right side
5,279,703.12x = 21,769,868,268,802.08 - Step 5: Solve for x
x = 21,769,868,268,802.08/5,279,703.12 - Step 6: Final answer
x = 4,123,312.95
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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.