Finding the Fourth Proportional to 2,819,874.42, 3,891,431.63 and 1,530,715.68
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Solution
The fourth proportional to 2,819,874.42, 3,891,431.63 and 1,530,715.68 is: 2,112,390.32
Step by Step Solution
- Step 1: Write the proportion equation
2,819,874.42 : 3,891,431.63 = 1,530,715.68 : x - Step 2: Convert to fraction form
2,819,874.42/3,891,431.63 = 1,530,715.68/x - Step 3: Cross multiply
2,819,874.42x = 3,891,431.63 × 1,530,715.68 - Step 4: Simplify right side
2,819,874.42x = 5,956,675,417,515.75 - Step 5: Solve for x
x = 5,956,675,417,515.75/2,819,874.42 - Step 6: Final answer
x = 2,112,390.32
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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.