Finding the Fourth Proportional to 644,301.13, 889,028.84 and 372,394.38
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Solution
The fourth proportional to 644,301.13, 889,028.84 and 372,394.38 is: 513,842.56
Step by Step Solution
- Step 1: Write the proportion equation
644,301.13 : 889,028.84 = 372,394.38 : x - Step 2: Convert to fraction form
644,301.13/889,028.84 = 372,394.38/x - Step 3: Cross multiply
644,301.13x = 889,028.84 × 372,394.38 - Step 4: Simplify right side
644,301.13x = 331,069,337,366.80 - Step 5: Solve for x
x = 331,069,337,366.80/644,301.13 - Step 6: Final answer
x = 513,842.56
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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.