Finding the Fourth Proportional to 2,136,179.84, 2,947,854.78 and 1,218,705.99
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Solution
The fourth proportional to 2,136,179.84, 2,947,854.78 and 1,218,705.99 is: 1,681,772.40
Step by Step Solution
- Step 1: Write the proportion equation
2,136,179.84 : 2,947,854.78 = 1,218,705.99 : x - Step 2: Convert to fraction form
2,136,179.84/2,947,854.78 = 1,218,705.99/x - Step 3: Cross multiply
2,136,179.84x = 2,947,854.78 × 1,218,705.99 - Step 4: Simplify right side
2,136,179.84x = 3,592,568,278,036.13 - Step 5: Solve for x
x = 3,592,568,278,036.13/2,136,179.84 - Step 6: Final answer
x = 1,681,772.40
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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.