Finding the Fourth Proportional to 644,349.26, 889,149.91 and 372,434.76
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Solution
The fourth proportional to 644,349.26, 889,149.91 and 372,434.76 is: 513,929.87
Step by Step Solution
- Step 1: Write the proportion equation
644,349.26 : 889,149.91 = 372,434.76 : x - Step 2: Convert to fraction form
644,349.26/889,149.91 = 372,434.76/x - Step 3: Cross multiply
644,349.26x = 889,149.91 × 372,434.76 - Step 4: Simplify right side
644,349.26x = 331,150,333,102.10 - Step 5: Solve for x
x = 331,150,333,102.10/644,349.26 - Step 6: Final answer
x = 513,929.87
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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.