Finding the Fourth Proportional to 764,661.18, 1,055,249.55 and 420,475.29
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Solution
The fourth proportional to 764,661.18, 1,055,249.55 and 420,475.29 is: 580,265.32
Step by Step Solution
- Step 1: Write the proportion equation
764,661.18 : 1,055,249.55 = 420,475.29 : x - Step 2: Convert to fraction form
764,661.18/1,055,249.55 = 420,475.29/x - Step 3: Cross multiply
764,661.18x = 1,055,249.55 × 420,475.29 - Step 4: Simplify right side
764,661.18x = 443,706,360,558.62 - Step 5: Solve for x
x = 443,706,360,558.62/764,661.18 - Step 6: Final answer
x = 580,265.32
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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.