Finding the Fourth Proportional to 663,921.36, 995,371.56 and 343,729.98
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Solution
The fourth proportional to 663,921.36, 995,371.56 and 343,729.98 is: 515,330.68
Step by Step Solution
- Step 1: Write the proportion equation
663,921.36 : 995,371.56 = 343,729.98 : x - Step 2: Convert to fraction form
663,921.36/995,371.56 = 343,729.98/x - Step 3: Cross multiply
663,921.36x = 995,371.56 × 343,729.98 - Step 4: Simplify right side
663,921.36x = 342,139,046,411.37 - Step 5: Solve for x
x = 342,139,046,411.37/663,921.36 - Step 6: Final answer
x = 515,330.68
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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.