Finding the Fourth Proportional to 3,121,415.20, 4,307,902.56 and 1,763,375.68
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Solution
The fourth proportional to 3,121,415.20, 4,307,902.56 and 1,763,375.68 is: 2,433,655.93
Step by Step Solution
- Step 1: Write the proportion equation
3,121,415.20 : 4,307,902.56 = 1,763,375.68 : x - Step 2: Convert to fraction form
3,121,415.20/4,307,902.56 = 1,763,375.68/x - Step 3: Cross multiply
3,121,415.20x = 4,307,902.56 × 1,763,375.68 - Step 4: Simplify right side
3,121,415.20x = 7,596,450,606,113.74 - Step 5: Solve for x
x = 7,596,450,606,113.74/3,121,415.20 - Step 6: Final answer
x = 2,433,655.93
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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.