Finding the Fourth Proportional to 5,112,162.68, 7,054,745.10 and 2,820,419.96
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Solution
The fourth proportional to 5,112,162.68, 7,054,745.10 and 2,820,419.96 is: 3,892,157.81
Step by Step Solution
- Step 1: Write the proportion equation
5,112,162.68 : 7,054,745.10 = 2,820,419.96 : x - Step 2: Convert to fraction form
5,112,162.68/7,054,745.10 = 2,820,419.96/x - Step 3: Cross multiply
5,112,162.68x = 7,054,745.10 × 2,820,419.96 - Step 4: Simplify right side
5,112,162.68x = 19,897,343,892,752.20 - Step 5: Solve for x
x = 19,897,343,892,752.20/5,112,162.68 - Step 6: Final answer
x = 3,892,157.81
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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.