Finding the Fourth Proportional to 720,321.36, 1,081,415.16 and 454,615.44
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Solution
The fourth proportional to 720,321.36, 1,081,415.16 and 454,615.44 is: 682,512.08
Step by Step Solution
- Step 1: Write the proportion equation
720,321.36 : 1,081,415.16 = 454,615.44 : x - Step 2: Convert to fraction form
720,321.36/1,081,415.16 = 454,615.44/x - Step 3: Cross multiply
720,321.36x = 1,081,415.16 × 454,615.44 - Step 4: Simplify right side
720,321.36x = 491,628,028,786.07 - Step 5: Solve for x
x = 491,628,028,786.07/720,321.36 - Step 6: Final answer
x = 682,512.08
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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.