Finding the Fourth Proportional to 1,204,763.12, 1,662,449.88 and 721,315.70
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Solution
The fourth proportional to 1,204,763.12, 1,662,449.88 and 721,315.70 is: 995,341.89
Step by Step Solution
- Step 1: Write the proportion equation
1,204,763.12 : 1,662,449.88 = 721,315.70 : x - Step 2: Convert to fraction form
1,204,763.12/1,662,449.88 = 721,315.70/x - Step 3: Cross multiply
1,204,763.12x = 1,662,449.88 × 721,315.70 - Step 4: Simplify right side
1,204,763.12x = 1,199,151,198,907.12 - Step 5: Solve for x
x = 1,199,151,198,907.12/1,204,763.12 - Step 6: Final answer
x = 995,341.89
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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.