Finding the Fourth Proportional to 743,400.18, 1,025,859.24 and 421,103.79
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Solution
The fourth proportional to 743,400.18, 1,025,859.24 and 421,103.79 is: 581,104.53
Step by Step Solution
- Step 1: Write the proportion equation
743,400.18 : 1,025,859.24 = 421,103.79 : x - Step 2: Convert to fraction form
743,400.18/1,025,859.24 = 421,103.79/x - Step 3: Cross multiply
743,400.18x = 1,025,859.24 × 421,103.79 - Step 4: Simplify right side
743,400.18x = 431,993,213,970.52 - Step 5: Solve for x
x = 431,993,213,970.52/743,400.18 - Step 6: Final answer
x = 581,104.53
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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.