Finding the Fourth Proportional to 721,778.99, 1,082,176.40 and 366,107.18
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Solution
The fourth proportional to 721,778.99, 1,082,176.40 and 366,107.18 is: 548,911.17
Step by Step Solution
- Step 1: Write the proportion equation
721,778.99 : 1,082,176.40 = 366,107.18 : x - Step 2: Convert to fraction form
721,778.99/1,082,176.40 = 366,107.18/x - Step 3: Cross multiply
721,778.99x = 1,082,176.40 × 366,107.18 - Step 4: Simplify right side
721,778.99x = 396,192,545,570.94 - Step 5: Solve for x
x = 396,192,545,570.94/721,778.99 - Step 6: Final answer
x = 548,911.17
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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.