Finding the Fourth Proportional to 721,239.80, 995,298.63 and 398,949.63
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Solution
The fourth proportional to 721,239.80, 995,298.63 and 398,949.63 is: 550,543.69
Step by Step Solution
- Step 1: Write the proportion equation
721,239.80 : 995,298.63 = 398,949.63 : x - Step 2: Convert to fraction form
721,239.80/995,298.63 = 398,949.63/x - Step 3: Cross multiply
721,239.80x = 995,298.63 × 398,949.63 - Step 4: Simplify right side
721,239.80x = 397,074,020,178.01 - Step 5: Solve for x
x = 397,074,020,178.01/721,239.80 - Step 6: Final answer
x = 550,543.69
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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.