Finding the Fourth Proportional to 769,429.80, 1,154,144.70 and 415,135.80
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Solution
The fourth proportional to 769,429.80, 1,154,144.70 and 415,135.80 is: 622,703.70
Step by Step Solution
- Step 1: Write the proportion equation
769,429.80 : 1,154,144.70 = 415,135.80 : x - Step 2: Convert to fraction form
769,429.80/1,154,144.70 = 415,135.80/x - Step 3: Cross multiply
769,429.80x = 1,154,144.70 × 415,135.80 - Step 4: Simplify right side
769,429.80x = 479,126,783,350.26 - Step 5: Solve for x
x = 479,126,783,350.26/769,429.80 - Step 6: Final answer
x = 622,703.70
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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.