Finding the Fourth Proportional to 860,245.99, 1,290,285.61 and 261,212.42
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Solution
The fourth proportional to 860,245.99, 1,290,285.61 and 261,212.42 is: 391,793.31
Step by Step Solution
- Step 1: Write the proportion equation
860,245.99 : 1,290,285.61 = 261,212.42 : x - Step 2: Convert to fraction form
860,245.99/1,290,285.61 = 261,212.42/x - Step 3: Cross multiply
860,245.99x = 1,290,285.61 × 261,212.42 - Step 4: Simplify right side
860,245.99x = 337,038,621,994.10 - Step 5: Solve for x
x = 337,038,621,994.10/860,245.99 - Step 6: Final answer
x = 391,793.31
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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.