Finding the Fourth Proportional to 720,193.87, 993,782.82 and 397,884.75
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Solution
The fourth proportional to 720,193.87, 993,782.82 and 397,884.75 is: 549,034.15
Step by Step Solution
- Step 1: Write the proportion equation
720,193.87 : 993,782.82 = 397,884.75 : x - Step 2: Convert to fraction form
720,193.87/993,782.82 = 397,884.75/x - Step 3: Cross multiply
720,193.87x = 993,782.82 × 397,884.75 - Step 4: Simplify right side
720,193.87x = 395,411,028,890.00 - Step 5: Solve for x
x = 395,411,028,890.00/720,193.87 - Step 6: Final answer
x = 549,034.15
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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.