Finding the Fourth Proportional to 5,112,151.68, 7,054,729.92 and 2,820,408.96
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Solution
The fourth proportional to 5,112,151.68, 7,054,729.92 and 2,820,408.96 is: 3,892,142.63
Step by Step Solution
- Step 1: Write the proportion equation
5,112,151.68 : 7,054,729.92 = 2,820,408.96 : x - Step 2: Convert to fraction form
5,112,151.68/7,054,729.92 = 2,820,408.96/x - Step 3: Cross multiply
5,112,151.68x = 7,054,729.92 × 2,820,408.96 - Step 4: Simplify right side
5,112,151.68x = 19,897,223,476,748.08 - Step 5: Solve for x
x = 19,897,223,476,748.08/5,112,151.68 - Step 6: Final answer
x = 3,892,142.63
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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.