Finding the Fourth Proportional to 2,136,121.92, 2,947,866.60 and 1,218,397.68
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Solution
The fourth proportional to 2,136,121.92, 2,947,866.60 and 1,218,397.68 is: 1,681,399.27
Step by Step Solution
- Step 1: Write the proportion equation
2,136,121.92 : 2,947,866.60 = 1,218,397.68 : x - Step 2: Convert to fraction form
2,136,121.92/2,947,866.60 = 1,218,397.68/x - Step 3: Cross multiply
2,136,121.92x = 2,947,866.60 × 1,218,397.68 - Step 4: Simplify right side
2,136,121.92x = 3,591,673,826,389.49 - Step 5: Solve for x
x = 3,591,673,826,389.49/2,136,121.92 - Step 6: Final answer
x = 1,681,399.27
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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.