Finding the Fourth Proportional to 642,886.92, 961,492.14 and 389,467.08
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Solution
The fourth proportional to 642,886.92, 961,492.14 and 389,467.08 is: 582,481.19
Step by Step Solution
- Step 1: Write the proportion equation
642,886.92 : 961,492.14 = 389,467.08 : x - Step 2: Convert to fraction form
642,886.92/961,492.14 = 389,467.08/x - Step 3: Cross multiply
642,886.92x = 961,492.14 × 389,467.08 - Step 4: Simplify right side
642,886.92x = 374,469,536,208.75 - Step 5: Solve for x
x = 374,469,536,208.75/642,886.92 - Step 6: Final answer
x = 582,481.19
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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.