Finding the Fourth Proportional to 826,481.93, 1,239,241.21 and 320,451.75
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Solution
The fourth proportional to 826,481.93, 1,239,241.21 and 320,451.75 is: 480,490.86
Step by Step Solution
- Step 1: Write the proportion equation
826,481.93 : 1,239,241.21 = 320,451.75 : x - Step 2: Convert to fraction form
826,481.93/1,239,241.21 = 320,451.75/x - Step 3: Cross multiply
826,481.93x = 1,239,241.21 × 320,451.75 - Step 4: Simplify right side
826,481.93x = 397,117,014,416.62 - Step 5: Solve for x
x = 397,117,014,416.62/826,481.93 - Step 6: Final answer
x = 480,490.86
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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.