Finding the Fourth Proportional to 829,745.44, 1,145,063.28 and 490,212.88
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Solution
The fourth proportional to 829,745.44, 1,145,063.28 and 490,212.88 is: 676,502.38
Step by Step Solution
- Step 1: Write the proportion equation
829,745.44 : 1,145,063.28 = 490,212.88 : x - Step 2: Convert to fraction form
829,745.44/1,145,063.28 = 490,212.88/x - Step 3: Cross multiply
829,745.44x = 1,145,063.28 × 490,212.88 - Step 4: Simplify right side
829,745.44x = 561,324,768,271.05 - Step 5: Solve for x
x = 561,324,768,271.05/829,745.44 - Step 6: Final answer
x = 676,502.38
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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.