Finding the Fourth Proportional to 713,416.92, 984,515.11 and 391,120.09
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Solution
The fourth proportional to 713,416.92, 984,515.11 and 391,120.09 is: 539,745.60
Step by Step Solution
- Step 1: Write the proportion equation
713,416.92 : 984,515.11 = 391,120.09 : x - Step 2: Convert to fraction form
713,416.92/984,515.11 = 391,120.09/x - Step 3: Cross multiply
713,416.92x = 984,515.11 × 391,120.09 - Step 4: Simplify right side
713,416.92x = 385,063,640,528.37 - Step 5: Solve for x
x = 385,063,640,528.37/713,416.92 - Step 6: Final answer
x = 539,745.60
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.