Finding the Fourth Proportional to 2,290,988.20, 3,161,476.26 and 1,272,458.68
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Solution
The fourth proportional to 2,290,988.20, 3,161,476.26 and 1,272,458.68 is: 1,755,944.40
Step by Step Solution
- Step 1: Write the proportion equation
2,290,988.20 : 3,161,476.26 = 1,272,458.68 : x - Step 2: Convert to fraction form
2,290,988.20/3,161,476.26 = 1,272,458.68/x - Step 3: Cross multiply
2,290,988.20x = 3,161,476.26 × 1,272,458.68 - Step 4: Simplify right side
2,290,988.20x = 4,022,847,908,650.94 - Step 5: Solve for x
x = 4,022,847,908,650.94/2,290,988.20 - Step 6: Final answer
x = 1,755,944.40
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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.