Finding the Fourth Proportional to 720,790.26, 994,602.88 and 398,455.62
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Solution
The fourth proportional to 720,790.26, 994,602.88 and 398,455.62 is: 549,820.29
Step by Step Solution
- Step 1: Write the proportion equation
720,790.26 : 994,602.88 = 398,455.62 : x - Step 2: Convert to fraction form
720,790.26/994,602.88 = 398,455.62/x - Step 3: Cross multiply
720,790.26x = 994,602.88 × 398,455.62 - Step 4: Simplify right side
720,790.26x = 396,305,107,204.19 - Step 5: Solve for x
x = 396,305,107,204.19/720,790.26 - Step 6: Final answer
x = 549,820.29
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1.5x scale
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.