Finding the Fourth Proportional to 486,481.12, 671,455.92 and 285,341.92
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Solution
The fourth proportional to 486,481.12, 671,455.92 and 285,341.92 is: 393,837.53
Step by Step Solution
- Step 1: Write the proportion equation
486,481.12 : 671,455.92 = 285,341.92 : x - Step 2: Convert to fraction form
486,481.12/671,455.92 = 285,341.92/x - Step 3: Cross multiply
486,481.12x = 671,455.92 × 285,341.92 - Step 4: Simplify right side
486,481.12x = 191,594,521,408.17 - Step 5: Solve for x
x = 191,594,521,408.17/486,481.12 - Step 6: Final answer
x = 393,837.53
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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.