Finding the Fourth Proportional to 722,161.32, 996,569.64 and 399,870.42
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Solution
The fourth proportional to 722,161.32, 996,569.64 and 399,870.42 is: 551,813.99
Step by Step Solution
- Step 1: Write the proportion equation
722,161.32 : 996,569.64 = 399,870.42 : x - Step 2: Convert to fraction form
722,161.32/996,569.64 = 399,870.42/x - Step 3: Cross multiply
722,161.32x = 996,569.64 × 399,870.42 - Step 4: Simplify right side
722,161.32x = 398,498,720,506.05 - Step 5: Solve for x
x = 398,498,720,506.05/722,161.32 - Step 6: Final answer
x = 551,813.99
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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.