Finding the Fourth Proportional to 687,495.09, 1,031,270.60 and 327,480.87
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Solution
The fourth proportional to 687,495.09, 1,031,270.60 and 327,480.87 is: 491,234.63
Step by Step Solution
- Step 1: Write the proportion equation
687,495.09 : 1,031,270.60 = 327,480.87 : x - Step 2: Convert to fraction form
687,495.09/1,031,270.60 = 327,480.87/x - Step 3: Cross multiply
687,495.09x = 1,031,270.60 × 327,480.87 - Step 4: Simplify right side
687,495.09x = 337,721,397,979.39 - Step 5: Solve for x
x = 337,721,397,979.39/687,495.09 - Step 6: Final answer
x = 491,234.63
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.