Finding the Fourth Proportional to 612,077.20, 918,115.80 and 543,842.80
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Solution
The fourth proportional to 612,077.20, 918,115.80 and 543,842.80 is: 815,764.20
Step by Step Solution
- Step 1: Write the proportion equation
612,077.20 : 918,115.80 = 543,842.80 : x - Step 2: Convert to fraction form
612,077.20/918,115.80 = 543,842.80/x - Step 3: Cross multiply
612,077.20x = 918,115.80 × 543,842.80 - Step 4: Simplify right side
612,077.20x = 499,310,667,396.24 - Step 5: Solve for x
x = 499,310,667,396.24/612,077.20 - Step 6: Final answer
x = 815,764.20
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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.