Finding the Fourth Proportional to 722,203.10, 996,639.66 and 399,913.19
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Solution
The fourth proportional to 722,203.10, 996,639.66 and 399,913.19 is: 551,879.86
Step by Step Solution
- Step 1: Write the proportion equation
722,203.10 : 996,639.66 = 399,913.19 : x - Step 2: Convert to fraction form
722,203.10/996,639.66 = 399,913.19/x - Step 3: Cross multiply
722,203.10x = 996,639.66 × 399,913.19 - Step 4: Simplify right side
722,203.10x = 398,569,345,711.12 - Step 5: Solve for x
x = 398,569,345,711.12/722,203.10 - Step 6: Final answer
x = 551,879.86
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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.