Finding the Fourth Proportional to 728,468.80, 1,092,508.80 and 255,104.80
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Solution
The fourth proportional to 728,468.80, 1,092,508.80 and 255,104.80 is: 382,589.12
Step by Step Solution
- Step 1: Write the proportion equation
728,468.80 : 1,092,508.80 = 255,104.80 : x - Step 2: Convert to fraction form
728,468.80/1,092,508.80 = 255,104.80/x - Step 3: Cross multiply
728,468.80x = 1,092,508.80 × 255,104.80 - Step 4: Simplify right side
728,468.80x = 278,704,238,922.24 - Step 5: Solve for x
x = 278,704,238,922.24/728,468.80 - Step 6: Final answer
x = 382,589.12
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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.