Finding the Fourth Proportional to 543,816.40, 815,724.60 and 539,879.80
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Solution
The fourth proportional to 543,816.40, 815,724.60 and 539,879.80 is: 809,819.70
Step by Step Solution
- Step 1: Write the proportion equation
543,816.40 : 815,724.60 = 539,879.80 : x - Step 2: Convert to fraction form
543,816.40/815,724.60 = 539,879.80/x - Step 3: Cross multiply
543,816.40x = 815,724.60 × 539,879.80 - Step 4: Simplify right side
543,816.40x = 440,393,233,903.08 - Step 5: Solve for x
x = 440,393,233,903.08/543,816.40 - Step 6: Final answer
x = 809,819.70
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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.