Finding the Fourth Proportional to 721,071.24, 995,073.84 and 398,775.48
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Solution
The fourth proportional to 721,071.24, 995,073.84 and 398,775.48 is: 550,307.69
Step by Step Solution
- Step 1: Write the proportion equation
721,071.24 : 995,073.84 = 398,775.48 : x - Step 2: Convert to fraction form
721,071.24/995,073.84 = 398,775.48/x - Step 3: Cross multiply
721,071.24x = 995,073.84 × 398,775.48 - Step 4: Simplify right side
721,071.24x = 396,811,048,181.44 - Step 5: Solve for x
x = 396,811,048,181.44/721,071.24 - Step 6: Final answer
x = 550,307.69
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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.