Finding the Fourth Proportional to 726,412.90, 1,089,230.55 and 305,212.90
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Solution
The fourth proportional to 726,412.90, 1,089,230.55 and 305,212.90 is: 457,655.99
Step by Step Solution
- Step 1: Write the proportion equation
726,412.90 : 1,089,230.55 = 305,212.90 : x - Step 2: Convert to fraction form
726,412.90/1,089,230.55 = 305,212.90/x - Step 3: Cross multiply
726,412.90x = 1,089,230.55 × 305,212.90 - Step 4: Simplify right side
726,412.90x = 332,447,214,934.10 - Step 5: Solve for x
x = 332,447,214,934.10/726,412.90 - Step 6: Final answer
x = 457,655.99
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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.