Finding the Fourth Proportional to 1,392,662.13, 2,088,993.21 and 919,236.76
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Solution
The fourth proportional to 1,392,662.13, 2,088,993.21 and 919,236.76 is: 1,378,855.15
Step by Step Solution
- Step 1: Write the proportion equation
1,392,662.13 : 2,088,993.21 = 919,236.76 : x - Step 2: Convert to fraction form
1,392,662.13/2,088,993.21 = 919,236.76/x - Step 3: Cross multiply
1,392,662.13x = 2,088,993.21 × 919,236.76 - Step 4: Simplify right side
1,392,662.13x = 1,920,279,350,022.40 - Step 5: Solve for x
x = 1,920,279,350,022.40/1,392,662.13 - Step 6: Final answer
x = 1,378,855.15
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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.