Finding the Fourth Proportional to 716,466.87, 988,724.25 and 394,170.05
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Solution
The fourth proportional to 716,466.87, 988,724.25 and 394,170.05 is: 543,954.66
Step by Step Solution
- Step 1: Write the proportion equation
716,466.87 : 988,724.25 = 394,170.05 : x - Step 2: Convert to fraction form
716,466.87/988,724.25 = 394,170.05/x - Step 3: Cross multiply
716,466.87x = 988,724.25 × 394,170.05 - Step 4: Simplify right side
716,466.87x = 389,725,489,530.52 - Step 5: Solve for x
x = 389,725,489,530.52/716,466.87 - Step 6: Final answer
x = 543,954.66
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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.