Finding the Fourth Proportional to 512,913.80, 769,370.70 and 419,601.80
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Solution
The fourth proportional to 512,913.80, 769,370.70 and 419,601.80 is: 629,402.70
Step by Step Solution
- Step 1: Write the proportion equation
512,913.80 : 769,370.70 = 419,601.80 : x - Step 2: Convert to fraction form
512,913.80/769,370.70 = 419,601.80/x - Step 3: Cross multiply
512,913.80x = 769,370.70 × 419,601.80 - Step 4: Simplify right side
512,913.80x = 322,829,330,587.26 - Step 5: Solve for x
x = 322,829,330,587.26/512,913.80 - Step 6: Final answer
x = 629,402.70
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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.