Finding the Fourth Proportional to 2,136,286.79, 2,947,888.97 and 1,264,965.17
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Solution
The fourth proportional to 2,136,286.79, 2,947,888.97 and 1,264,965.17 is: 1,745,541.32
Step by Step Solution
- Step 1: Write the proportion equation
2,136,286.79 : 2,947,888.97 = 1,264,965.17 : x - Step 2: Convert to fraction form
2,136,286.79/2,947,888.97 = 1,264,965.17/x - Step 3: Cross multiply
2,136,286.79x = 2,947,888.97 × 1,264,965.17 - Step 4: Simplify right side
2,136,286.79x = 3,728,976,873,122.07 - Step 5: Solve for x
x = 3,728,976,873,122.07/2,136,286.79 - Step 6: Final answer
x = 1,745,541.32
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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.