Finding the Fourth Proportional to 5,279,396.28, 7,281,803.20 and 4,845,213.12
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Solution
The fourth proportional to 5,279,396.28, 7,281,803.20 and 4,845,213.12 is: 6,682,939.97
Step by Step Solution
- Step 1: Write the proportion equation
5,279,396.28 : 7,281,803.20 = 4,845,213.12 : x - Step 2: Convert to fraction form
5,279,396.28/7,281,803.20 = 4,845,213.12/x - Step 3: Cross multiply
5,279,396.28x = 7,281,803.20 × 4,845,213.12 - Step 4: Simplify right side
5,279,396.28x = 35,281,888,401,897.98 - Step 5: Solve for x
x = 35,281,888,401,897.98/5,279,396.28 - Step 6: Final answer
x = 6,682,939.97
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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.