Finding the Fourth Proportional to 1,189,445.96, 1,641,391.49 and 645,570.06
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Solution
The fourth proportional to 1,189,445.96, 1,641,391.49 and 645,570.06 is: 890,862.84
Step by Step Solution
- Step 1: Write the proportion equation
1,189,445.96 : 1,641,391.49 = 645,570.06 : x - Step 2: Convert to fraction form
1,189,445.96/1,641,391.49 = 645,570.06/x - Step 3: Cross multiply
1,189,445.96x = 1,641,391.49 × 645,570.06 - Step 4: Simplify right side
1,189,445.96x = 1,059,633,202,682.79 - Step 5: Solve for x
x = 1,059,633,202,682.79/1,189,445.96 - Step 6: Final answer
x = 890,862.84
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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.