Finding the Fourth Proportional to 721,671.24, 995,881.50 and 399,394.92
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Solution
The fourth proportional to 721,671.24, 995,881.50 and 399,394.92 is: 551,151.26
Step by Step Solution
- Step 1: Write the proportion equation
721,671.24 : 995,881.50 = 399,394.92 : x - Step 2: Convert to fraction form
721,671.24/995,881.50 = 399,394.92/x - Step 3: Cross multiply
721,671.24x = 995,881.50 × 399,394.92 - Step 4: Simplify right side
721,671.24x = 397,750,012,021.98 - Step 5: Solve for x
x = 397,750,012,021.98/721,671.24 - Step 6: Final answer
x = 551,151.26
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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.