Finding the Fourth Proportional to 664,589.16, 917,121.24 and 378,103.08
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Solution
The fourth proportional to 664,589.16, 917,121.24 and 378,103.08 is: 521,775.54
Step by Step Solution
- Step 1: Write the proportion equation
664,589.16 : 917,121.24 = 378,103.08 : x - Step 2: Convert to fraction form
664,589.16/917,121.24 = 378,103.08/x - Step 3: Cross multiply
664,589.16x = 917,121.24 × 378,103.08 - Step 4: Simplify right side
664,589.16x = 346,766,365,577.42 - Step 5: Solve for x
x = 346,766,365,577.42/664,589.16 - Step 6: Final answer
x = 521,775.54
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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.