Finding the Fourth Proportional to 860,450.87, 1,290,678.73 and 261,416.99
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Solution
The fourth proportional to 860,450.87, 1,290,678.73 and 261,416.99 is: 392,126.22
Step by Step Solution
- Step 1: Write the proportion equation
860,450.87 : 1,290,678.73 = 261,416.99 : x - Step 2: Convert to fraction form
860,450.87/1,290,678.73 = 261,416.99/x - Step 3: Cross multiply
860,450.87x = 1,290,678.73 × 261,416.99 - Step 4: Simplify right side
860,450.87x = 337,405,341,546.69 - Step 5: Solve for x
x = 337,405,341,546.69/860,450.87 - Step 6: Final answer
x = 392,126.22
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1.5x scale
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.