Finding the Fourth Proportional to 721,108.64, 995,042.40 and 398,774.84
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Solution
The fourth proportional to 721,108.64, 995,042.40 and 398,774.84 is: 550,260.88
Step by Step Solution
- Step 1: Write the proportion equation
721,108.64 : 995,042.40 = 398,774.84 : x - Step 2: Convert to fraction form
721,108.64/995,042.40 = 398,774.84/x - Step 3: Cross multiply
721,108.64x = 995,042.40 × 398,774.84 - Step 4: Simplify right side
721,108.64x = 396,797,873,853.22 - Step 5: Solve for x
x = 396,797,873,853.22/721,108.64 - Step 6: Final answer
x = 550,260.88
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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.