Finding the Fourth Proportional to 878,471.12, 1,212,290.04 and 476,063.12
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Solution
The fourth proportional to 878,471.12, 1,212,290.04 and 476,063.12 is: 656,967.05
Step by Step Solution
- Step 1: Write the proportion equation
878,471.12 : 1,212,290.04 = 476,063.12 : x - Step 2: Convert to fraction form
878,471.12/1,212,290.04 = 476,063.12/x - Step 3: Cross multiply
878,471.12x = 1,212,290.04 × 476,063.12 - Step 4: Simplify right side
878,471.12x = 577,126,578,787.33 - Step 5: Solve for x
x = 577,126,578,787.33/878,471.12 - Step 6: Final answer
x = 656,967.05
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1.5x scale
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.