Finding the Fourth Proportional to 658,131.80, 987,197.70 and 378,195.80
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Solution
The fourth proportional to 658,131.80, 987,197.70 and 378,195.80 is: 567,293.70
Step by Step Solution
- Step 1: Write the proportion equation
658,131.80 : 987,197.70 = 378,195.80 : x - Step 2: Convert to fraction form
658,131.80/987,197.70 = 378,195.80/x - Step 3: Cross multiply
658,131.80x = 987,197.70 × 378,195.80 - Step 4: Simplify right side
658,131.80x = 373,354,023,909.66 - Step 5: Solve for x
x = 373,354,023,909.66/658,131.80 - Step 6: Final answer
x = 567,293.70
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Double scale
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Similar ratio
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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.