Finding the Fourth Proportional to 721,186.24, 995,170.12 and 398,889.42
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Solution
The fourth proportional to 721,186.24, 995,170.12 and 398,889.42 is: 550,430.40
Step by Step Solution
- Step 1: Write the proportion equation
721,186.24 : 995,170.12 = 398,889.42 : x - Step 2: Convert to fraction form
721,186.24/995,170.12 = 398,889.42/x - Step 3: Cross multiply
721,186.24x = 995,170.12 × 398,889.42 - Step 4: Simplify right side
721,186.24x = 396,962,831,968.13 - Step 5: Solve for x
x = 396,962,831,968.13/721,186.24 - Step 6: Final answer
x = 550,430.40
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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.