Finding the Fourth Proportional to 2,161,251.28, 3,241,876.86 and 813,716.20
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Solution
The fourth proportional to 2,161,251.28, 3,241,876.86 and 813,716.20 is: 1,220,574.28
Step by Step Solution
- Step 1: Write the proportion equation
2,161,251.28 : 3,241,876.86 = 813,716.20 : x - Step 2: Convert to fraction form
2,161,251.28/3,241,876.86 = 813,716.20/x - Step 3: Cross multiply
2,161,251.28x = 3,241,876.86 × 813,716.20 - Step 4: Simplify right side
2,161,251.28x = 2,637,967,719,387.13 - Step 5: Solve for x
x = 2,637,967,719,387.13/2,161,251.28 - Step 6: Final answer
x = 1,220,574.28
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1.5x scale
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.