Finding the Fourth Proportional to 1,556,915.72, 2,149,759.86 and 1,218,348.68
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Solution
The fourth proportional to 1,556,915.72, 2,149,759.86 and 1,218,348.68 is: 1,682,272.88
Step by Step Solution
- Step 1: Write the proportion equation
1,556,915.72 : 2,149,759.86 = 1,218,348.68 : x - Step 2: Convert to fraction form
1,556,915.72/2,149,759.86 = 1,218,348.68/x - Step 3: Cross multiply
1,556,915.72x = 2,149,759.86 × 1,218,348.68 - Step 4: Simplify right side
1,556,915.72x = 2,619,157,087,747.98 - Step 5: Solve for x
x = 2,619,157,087,747.98/1,556,915.72 - Step 6: Final answer
x = 1,682,272.88
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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.