Finding the Fourth Proportional to 789,412, 1,089,414.48 and 431,716
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Solution
The fourth proportional to 789,412, 1,089,414.48 and 431,716 is: 595,782.26
Step by Step Solution
- Step 1: Write the proportion equation
789,412 : 1,089,414.48 = 431,716 : x - Step 2: Convert to fraction form
789,412/1,089,414.48 = 431,716/x - Step 3: Cross multiply
789,412x = 1,089,414.48 × 431,716 - Step 4: Simplify right side
789,412x = 470,317,661,647.68 - Step 5: Solve for x
x = 470,317,661,647.68/789,412 - Step 6: Final answer
x = 595,782.26
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.