Finding the Fourth Proportional to 2,721,213.68, 4,078,257.96 and 1,121,915.12
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Solution
The fourth proportional to 2,721,213.68, 4,078,257.96 and 1,121,915.12 is: 1,681,403.89
Step by Step Solution
- Step 1: Write the proportion equation
2,721,213.68 : 4,078,257.96 = 1,121,915.12 : x - Step 2: Convert to fraction form
2,721,213.68/4,078,257.96 = 1,121,915.12/x - Step 3: Cross multiply
2,721,213.68x = 4,078,257.96 × 1,121,915.12 - Step 4: Simplify right side
2,721,213.68x = 4,575,459,268,584.36 - Step 5: Solve for x
x = 4,575,459,268,584.36/2,721,213.68 - Step 6: Final answer
x = 1,681,403.89
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.