Finding the Fourth Proportional to 721,873.10, 996,193.68 and 399,612.98
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Solution
The fourth proportional to 721,873.10, 996,193.68 and 399,612.98 is: 551,470.78
Step by Step Solution
- Step 1: Write the proportion equation
721,873.10 : 996,193.68 = 399,612.98 : x - Step 2: Convert to fraction form
721,873.10/996,193.68 = 399,612.98/x - Step 3: Cross multiply
721,873.10x = 996,193.68 × 399,612.98 - Step 4: Simplify right side
721,873.10x = 398,091,925,121.97 - Step 5: Solve for x
x = 398,091,925,121.97/721,873.10 - Step 6: Final answer
x = 551,470.78
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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.