Finding the Fourth Proportional to 764,561.97, 1,055,122.61 and 420,424.09
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Solution
The fourth proportional to 764,561.97, 1,055,122.61 and 420,424.09 is: 580,200.14
Step by Step Solution
- Step 1: Write the proportion equation
764,561.97 : 1,055,122.61 = 420,424.09 : x - Step 2: Convert to fraction form
764,561.97/1,055,122.61 = 420,424.09/x - Step 3: Cross multiply
764,561.97x = 1,055,122.61 × 420,424.09 - Step 4: Simplify right side
764,561.97x = 443,598,958,407.75 - Step 5: Solve for x
x = 443,598,958,407.75/764,561.97 - Step 6: Final answer
x = 580,200.14
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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.