Finding the Fourth Proportional to 727,663.38, 1,004,131.73 and 405,315.99
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Solution
The fourth proportional to 727,663.38, 1,004,131.73 and 405,315.99 is: 559,311.70
Step by Step Solution
- Step 1: Write the proportion equation
727,663.38 : 1,004,131.73 = 405,315.99 : x - Step 2: Convert to fraction form
727,663.38/1,004,131.73 = 405,315.99/x - Step 3: Cross multiply
727,663.38x = 1,004,131.73 × 405,315.99 - Step 4: Simplify right side
727,663.38x = 406,990,644,208.78 - Step 5: Solve for x
x = 406,990,644,208.78/727,663.38 - Step 6: Final answer
x = 559,311.70
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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.