Finding the Fourth Proportional to 3,207,581.76, 4,426,461.20 and 1,918,422.08
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Solution
The fourth proportional to 3,207,581.76, 4,426,461.20 and 1,918,422.08 is: 2,647,421.50
Step by Step Solution
- Step 1: Write the proportion equation
3,207,581.76 : 4,426,461.20 = 1,918,422.08 : x - Step 2: Convert to fraction form
3,207,581.76/4,426,461.20 = 1,918,422.08/x - Step 3: Cross multiply
3,207,581.76x = 4,426,461.20 × 1,918,422.08 - Step 4: Simplify right side
3,207,581.76x = 8,491,820,902,343.30 - Step 5: Solve for x
x = 8,491,820,902,343.30/3,207,581.76 - Step 6: Final answer
x = 2,647,421.50
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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.