Finding the Fourth Proportional to 2,145,722.97, 2,961,149.91 and 1,178,915.88
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Solution
The fourth proportional to 2,145,722.97, 2,961,149.91 and 1,178,915.88 is: 1,626,932.60
Step by Step Solution
- Step 1: Write the proportion equation
2,145,722.97 : 2,961,149.91 = 1,178,915.88 : x - Step 2: Convert to fraction form
2,145,722.97/2,961,149.91 = 1,178,915.88/x - Step 3: Cross multiply
2,145,722.97x = 2,961,149.91 × 1,178,915.88 - Step 4: Simplify right side
2,145,722.97x = 3,490,946,651,959.57 - Step 5: Solve for x
x = 3,490,946,651,959.57/2,145,722.97 - Step 6: Final answer
x = 1,626,932.60
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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.