Finding the Fourth Proportional to 543,135.20, 814,702.80 and 342,368.60
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Solution
The fourth proportional to 543,135.20, 814,702.80 and 342,368.60 is: 513,552.90
Step by Step Solution
- Step 1: Write the proportion equation
543,135.20 : 814,702.80 = 342,368.60 : x - Step 2: Convert to fraction form
543,135.20/814,702.80 = 342,368.60/x - Step 3: Cross multiply
543,135.20x = 814,702.80 × 342,368.60 - Step 4: Simplify right side
543,135.20x = 278,928,657,052.08 - Step 5: Solve for x
x = 278,928,657,052.08/543,135.20 - Step 6: Final answer
x = 513,552.90
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Similar ratio
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1.5x scale
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.