Finding the Fourth Proportional to 3,112,486.77, 4,669,138.49 and 1,218,982.17
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Solution
The fourth proportional to 3,112,486.77, 4,669,138.49 and 1,218,982.17 is: 1,828,633.17
Step by Step Solution
- Step 1: Write the proportion equation
3,112,486.77 : 4,669,138.49 = 1,218,982.17 : x - Step 2: Convert to fraction form
3,112,486.77/4,669,138.49 = 1,218,982.17/x - Step 3: Cross multiply
3,112,486.77x = 4,669,138.49 × 1,218,982.17 - Step 4: Simplify right side
3,112,486.77x = 5,691,596,562,475.81 - Step 5: Solve for x
x = 5,691,596,562,475.81/3,112,486.77 - Step 6: Final answer
x = 1,828,633.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.