Finding the Fourth Proportional to 386,452.62, 579,398.68 and 259,778.68
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Solution
The fourth proportional to 386,452.62, 579,398.68 and 259,778.68 is: 389,479.63
Step by Step Solution
- Step 1: Write the proportion equation
386,452.62 : 579,398.68 = 259,778.68 : x - Step 2: Convert to fraction form
386,452.62/579,398.68 = 259,778.68/x - Step 3: Cross multiply
386,452.62x = 579,398.68 × 259,778.68 - Step 4: Simplify right side
386,452.62x = 150,515,423,160.37 - Step 5: Solve for x
x = 150,515,423,160.37/386,452.62 - Step 6: Final answer
x = 389,479.63
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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.