Finding the Fourth Proportional to 461,207.70, 691,811.55 and 398,999.70
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Solution
The fourth proportional to 461,207.70, 691,811.55 and 398,999.70 is: 598,499.55
Step by Step Solution
- Step 1: Write the proportion equation
461,207.70 : 691,811.55 = 398,999.70 : x - Step 2: Convert to fraction form
461,207.70/691,811.55 = 398,999.70/x - Step 3: Cross multiply
461,207.70x = 691,811.55 × 398,999.70 - Step 4: Simplify right side
461,207.70x = 276,032,600,906.54 - Step 5: Solve for x
x = 276,032,600,906.54/461,207.70 - Step 6: Final answer
x = 598,499.55
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Similar ratio
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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.