Finding the Fourth Proportional to 828,080.80, 1,241,235.28 and 428,319.08
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Solution
The fourth proportional to 828,080.80, 1,241,235.28 and 428,319.08 is: 642,020.38
Step by Step Solution
- Step 1: Write the proportion equation
828,080.80 : 1,241,235.28 = 428,319.08 : x - Step 2: Convert to fraction form
828,080.80/1,241,235.28 = 428,319.08/x - Step 3: Cross multiply
828,080.80x = 1,241,235.28 × 428,319.08 - Step 4: Simplify right side
828,080.80x = 531,644,753,193.14 - Step 5: Solve for x
x = 531,644,753,193.14/828,080.80 - Step 6: Final answer
x = 642,020.38
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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.