Finding the Fourth Proportional to 1,189,473.41, 1,641,469.21 and 645,609.17
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Solution
The fourth proportional to 1,189,473.41, 1,641,469.21 and 645,609.17 is: 890,938.43
Step by Step Solution
- Step 1: Write the proportion equation
1,189,473.41 : 1,641,469.21 = 645,609.17 : x - Step 2: Convert to fraction form
1,189,473.41/1,641,469.21 = 645,609.17/x - Step 3: Cross multiply
1,189,473.41x = 1,641,469.21 × 645,609.17 - Step 4: Simplify right side
1,189,473.41x = 1,059,747,576,738.31 - Step 5: Solve for x
x = 1,059,747,576,738.31/1,189,473.41 - Step 6: Final answer
x = 890,938.43
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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.