Finding the Fourth Proportional to 970,138.78, 1,338,704.67 and 540,409.69
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Solution
The fourth proportional to 970,138.78, 1,338,704.67 and 540,409.69 is: 745,716.99
Step by Step Solution
- Step 1: Write the proportion equation
970,138.78 : 1,338,704.67 = 540,409.69 : x - Step 2: Convert to fraction form
970,138.78/1,338,704.67 = 540,409.69/x - Step 3: Cross multiply
970,138.78x = 1,338,704.67 × 540,409.69 - Step 4: Simplify right side
970,138.78x = 723,448,975,716.25 - Step 5: Solve for x
x = 723,448,975,716.25/970,138.78 - Step 6: Final answer
x = 745,716.99
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1.5x scale
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.