Finding the Fourth Proportional to 2,151,768.07, 2,969,214.18 and 1,221,179.48
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Solution
The fourth proportional to 2,151,768.07, 2,969,214.18 and 1,221,179.48 is: 1,685,099.56
Step by Step Solution
- Step 1: Write the proportion equation
2,151,768.07 : 2,969,214.18 = 1,221,179.48 : x - Step 2: Convert to fraction form
2,151,768.07/2,969,214.18 = 1,221,179.48/x - Step 3: Cross multiply
2,151,768.07x = 2,969,214.18 × 1,221,179.48 - Step 4: Simplify right side
2,151,768.07x = 3,625,943,412,350.10 - Step 5: Solve for x
x = 3,625,943,412,350.10/2,151,768.07 - Step 6: Final answer
x = 1,685,099.56
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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.