Finding the Fourth Proportional to 620,138.68, 855,884.96 and 378,561.88
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Solution
The fourth proportional to 620,138.68, 855,884.96 and 378,561.88 is: 522,472.52
Step by Step Solution
- Step 1: Write the proportion equation
620,138.68 : 855,884.96 = 378,561.88 : x - Step 2: Convert to fraction form
620,138.68/855,884.96 = 378,561.88/x - Step 3: Cross multiply
620,138.68x = 855,884.96 × 378,561.88 - Step 4: Simplify right side
620,138.68x = 324,005,419,521.33 - Step 5: Solve for x
x = 324,005,419,521.33/620,138.68 - Step 6: Final answer
x = 522,472.52
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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.