Finding the Fourth Proportional to 860,247.12, 1,290,287.30 and 261,213.55
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Solution
The fourth proportional to 860,247.12, 1,290,287.30 and 261,213.55 is: 391,795.00
Step by Step Solution
- Step 1: Write the proportion equation
860,247.12 : 1,290,287.30 = 261,213.55 : x - Step 2: Convert to fraction form
860,247.12/1,290,287.30 = 261,213.55/x - Step 3: Cross multiply
860,247.12x = 1,290,287.30 × 261,213.55 - Step 4: Simplify right side
860,247.12x = 337,040,521,621.13 - Step 5: Solve for x
x = 337,040,521,621.13/860,247.12 - Step 6: Final answer
x = 391,795.00
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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.