Finding the Fourth Proportional to 721,876.05, 996,176.88 and 399,579.23
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Solution
The fourth proportional to 721,876.05, 996,176.88 and 399,579.23 is: 551,412.65
Step by Step Solution
- Step 1: Write the proportion equation
721,876.05 : 996,176.88 = 399,579.23 : x - Step 2: Convert to fraction form
721,876.05/996,176.88 = 399,579.23/x - Step 3: Cross multiply
721,876.05x = 996,176.88 × 399,579.23 - Step 4: Simplify right side
721,876.05x = 398,051,585,673.32 - Step 5: Solve for x
x = 398,051,585,673.32/721,876.05 - Step 6: Final answer
x = 551,412.65
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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.