Finding the Fourth Proportional to 644,379.11, 889,144.43 and 372,394.53
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Solution
The fourth proportional to 644,379.11, 889,144.43 and 372,394.53 is: 513,847.39
Step by Step Solution
- Step 1: Write the proportion equation
644,379.11 : 889,144.43 = 372,394.53 : x - Step 2: Convert to fraction form
644,379.11/889,144.43 = 372,394.53/x - Step 3: Cross multiply
644,379.11x = 889,144.43 × 372,394.53 - Step 4: Simplify right side
644,379.11x = 331,112,522,111.97 - Step 5: Solve for x
x = 331,112,522,111.97/644,379.11 - Step 6: Final answer
x = 513,847.39
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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.