Finding the Fourth Proportional to 764,580.84, 1,055,144.52 and 420,398.97
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Solution
The fourth proportional to 764,580.84, 1,055,144.52 and 420,398.97 is: 580,163.20
Step by Step Solution
- Step 1: Write the proportion equation
764,580.84 : 1,055,144.52 = 420,398.97 : x - Step 2: Convert to fraction form
764,580.84/1,055,144.52 = 420,398.97/x - Step 3: Cross multiply
764,580.84x = 1,055,144.52 × 420,398.97 - Step 4: Simplify right side
764,580.84x = 443,581,669,409.14 - Step 5: Solve for x
x = 443,581,669,409.14/764,580.84 - Step 6: Final answer
x = 580,163.20
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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.