Finding the Fourth Proportional to 1,189,431.62, 1,641,416.45 and 645,567.42
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Solution
The fourth proportional to 1,189,431.62, 1,641,416.45 and 645,567.42 is: 890,883.48
Step by Step Solution
- Step 1: Write the proportion equation
1,189,431.62 : 1,641,416.45 = 645,567.42 : x - Step 2: Convert to fraction form
1,189,431.62/1,641,416.45 = 645,567.42/x - Step 3: Cross multiply
1,189,431.62x = 1,641,416.45 × 645,567.42 - Step 4: Simplify right side
1,189,431.62x = 1,059,644,982,772.06 - Step 5: Solve for x
x = 1,059,644,982,772.06/1,189,431.62 - Step 6: Final answer
x = 890,883.48
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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.