Finding the Fourth Proportional to 3,767,711.36, 5,199,578.53 and 2,158,390.40
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Solution
The fourth proportional to 3,767,711.36, 5,199,578.53 and 2,158,390.40 is: 2,978,657.15
Step by Step Solution
- Step 1: Write the proportion equation
3,767,711.36 : 5,199,578.53 = 2,158,390.40 : x - Step 2: Convert to fraction form
3,767,711.36/5,199,578.53 = 2,158,390.40/x - Step 3: Cross multiply
3,767,711.36x = 5,199,578.53 × 2,158,390.40 - Step 4: Simplify right side
3,767,711.36x = 11,222,720,351,804.24 - Step 5: Solve for x
x = 11,222,720,351,804.24/3,767,711.36 - Step 6: Final answer
x = 2,978,657.15
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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.