Finding the Fourth Proportional to 3,921,721.71, 5,412,107.39 and 2,179,464.53
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Solution
The fourth proportional to 3,921,721.71, 5,412,107.39 and 2,179,464.53 is: 3,007,734.09
Step by Step Solution
- Step 1: Write the proportion equation
3,921,721.71 : 5,412,107.39 = 2,179,464.53 : x - Step 2: Convert to fraction form
3,921,721.71/5,412,107.39 = 2,179,464.53/x - Step 3: Cross multiply
3,921,721.71x = 5,412,107.39 × 2,179,464.53 - Step 4: Simplify right side
3,921,721.71x = 11,795,496,089,055.88 - Step 5: Solve for x
x = 11,795,496,089,055.88/3,921,721.71 - Step 6: Final answer
x = 3,007,734.09
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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.