Finding the Fourth Proportional to 2,136,642.64, 2,948,847.63 and 1,218,661.36
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Solution
The fourth proportional to 2,136,642.64, 2,948,847.63 and 1,218,661.36 is: 1,681,912.83
Step by Step Solution
- Step 1: Write the proportion equation
2,136,642.64 : 2,948,847.63 = 1,218,661.36 : x - Step 2: Convert to fraction form
2,136,642.64/2,948,847.63 = 1,218,661.36/x - Step 3: Cross multiply
2,136,642.64x = 2,948,847.63 × 1,218,661.36 - Step 4: Simplify right side
2,136,642.64x = 3,593,646,663,208.58 - Step 5: Solve for x
x = 3,593,646,663,208.58/2,136,642.64 - Step 6: Final answer
x = 1,681,912.83
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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.