Finding the Fourth Proportional to 620,064.62, 855,782.67 and 378,487.23
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Solution
The fourth proportional to 620,064.62, 855,782.67 and 378,487.23 is: 522,369.45
Step by Step Solution
- Step 1: Write the proportion equation
620,064.62 : 855,782.67 = 378,487.23 : x - Step 2: Convert to fraction form
620,064.62/855,782.67 = 378,487.23/x - Step 3: Cross multiply
620,064.62x = 855,782.67 × 378,487.23 - Step 4: Simplify right side
620,064.62x = 323,902,813,145.23 - Step 5: Solve for x
x = 323,902,813,145.23/620,064.62 - Step 6: Final answer
x = 522,369.45
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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.