Finding the Fourth Proportional to 512,905.80, 769,358.70 and 419,593.80
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Solution
The fourth proportional to 512,905.80, 769,358.70 and 419,593.80 is: 629,390.70
Step by Step Solution
- Step 1: Write the proportion equation
512,905.80 : 769,358.70 = 419,593.80 : x - Step 2: Convert to fraction form
512,905.80/769,358.70 = 419,593.80/x - Step 3: Cross multiply
512,905.80x = 769,358.70 × 419,593.80 - Step 4: Simplify right side
512,905.80x = 322,818,140,496.06 - Step 5: Solve for x
x = 322,818,140,496.06/512,905.80 - Step 6: Final answer
x = 629,390.70
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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.