Finding the Fourth Proportional to 781,450.68, 1,078,093.62 and 490,891.56
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Solution
The fourth proportional to 781,450.68, 1,078,093.62 and 490,891.56 is: 677,236.67
Step by Step Solution
- Step 1: Write the proportion equation
781,450.68 : 1,078,093.62 = 490,891.56 : x - Step 2: Convert to fraction form
781,450.68/1,078,093.62 = 490,891.56/x - Step 3: Cross multiply
781,450.68x = 1,078,093.62 × 490,891.56 - Step 4: Simplify right side
781,450.68x = 529,227,058,947.85 - Step 5: Solve for x
x = 529,227,058,947.85/781,450.68 - Step 6: Final answer
x = 677,236.67
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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.