Finding the Fourth Proportional to 720,789.26, 994,601.50 and 398,454.62
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Solution
The fourth proportional to 720,789.26, 994,601.50 and 398,454.62 is: 549,818.90
Step by Step Solution
- Step 1: Write the proportion equation
720,789.26 : 994,601.50 = 398,454.62 : x - Step 2: Convert to fraction form
720,789.26/994,601.50 = 398,454.62/x - Step 3: Cross multiply
720,789.26x = 994,601.50 × 398,454.62 - Step 4: Simplify right side
720,789.26x = 396,303,556,764.79 - Step 5: Solve for x
x = 396,303,556,764.79/720,789.26 - Step 6: Final answer
x = 549,818.90
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.