Finding the Fourth Proportional to 789,320.68, 1,089,240.42 and 431,617
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Solution
The fourth proportional to 789,320.68, 1,089,240.42 and 431,617 is: 595,619.37
Step by Step Solution
- Step 1: Write the proportion equation
789,320.68 : 1,089,240.42 = 431,617 : x - Step 2: Convert to fraction form
789,320.68/1,089,240.42 = 431,617/x - Step 3: Cross multiply
789,320.68x = 1,089,240.42 × 431,617 - Step 4: Simplify right side
789,320.68x = 470,134,682,359.14 - Step 5: Solve for x
x = 470,134,682,359.14/789,320.68 - Step 6: Final answer
x = 595,619.37
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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.