Finding the Fourth Proportional to 419,745.40, 629,618.10 and 403,415.80
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Solution
The fourth proportional to 419,745.40, 629,618.10 and 403,415.80 is: 605,123.70
Step by Step Solution
- Step 1: Write the proportion equation
419,745.40 : 629,618.10 = 403,415.80 : x - Step 2: Convert to fraction form
419,745.40/629,618.10 = 403,415.80/x - Step 3: Cross multiply
419,745.40x = 629,618.10 × 403,415.80 - Step 4: Simplify right side
419,745.40x = 253,997,889,505.98 - Step 5: Solve for x
x = 253,997,889,505.98/419,745.40 - Step 6: Final answer
x = 605,123.70
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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.