Finding the Fourth Proportional to 638,433.20, 955,806.60 and 389,601.20
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Solution
The fourth proportional to 638,433.20, 955,806.60 and 389,601.20 is: 583,276.99
Step by Step Solution
- Step 1: Write the proportion equation
638,433.20 : 955,806.60 = 389,601.20 : x - Step 2: Convert to fraction form
638,433.20/955,806.60 = 389,601.20/x - Step 3: Cross multiply
638,433.20x = 955,806.60 × 389,601.20 - Step 4: Simplify right side
638,433.20x = 372,383,398,327.92 - Step 5: Solve for x
x = 372,383,398,327.92/638,433.20 - Step 6: Final answer
x = 583,276.99
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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.