Finding the Fourth Proportional to 2,120,649.89, 3,181,270.28 and 681,376.68
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Solution
The fourth proportional to 2,120,649.89, 3,181,270.28 and 681,376.68 is: 1,022,159.95
Step by Step Solution
- Step 1: Write the proportion equation
2,120,649.89 : 3,181,270.28 = 681,376.68 : x - Step 2: Convert to fraction form
2,120,649.89/3,181,270.28 = 681,376.68/x - Step 3: Cross multiply
2,120,649.89x = 3,181,270.28 × 681,376.68 - Step 4: Simplify right side
2,120,649.89x = 2,167,643,378,162.19 - Step 5: Solve for x
x = 2,167,643,378,162.19/2,120,649.89 - Step 6: Final answer
x = 1,022,159.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.