Finding the Fourth Proportional to 721,338.76, 995,439.99 and 394,648.68
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Solution
The fourth proportional to 721,338.76, 995,439.99 and 394,648.68 is: 544,611.08
Step by Step Solution
- Step 1: Write the proportion equation
721,338.76 : 995,439.99 = 394,648.68 : x - Step 2: Convert to fraction form
721,338.76/995,439.99 = 394,648.68/x - Step 3: Cross multiply
721,338.76x = 995,439.99 × 394,648.68 - Step 4: Simplify right side
721,338.76x = 392,849,078,072.71 - Step 5: Solve for x
x = 392,849,078,072.71/721,338.76 - Step 6: Final answer
x = 544,611.08
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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.