Finding the Fourth Proportional to 1,149,388.42, 1,586,042.49 and 640,138.18
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Solution
The fourth proportional to 1,149,388.42, 1,586,042.49 and 640,138.18 is: 883,327.46
Step by Step Solution
- Step 1: Write the proportion equation
1,149,388.42 : 1,586,042.49 = 640,138.18 : x - Step 2: Convert to fraction form
1,149,388.42/1,586,042.49 = 640,138.18/x - Step 3: Cross multiply
1,149,388.42x = 1,586,042.49 × 640,138.18 - Step 4: Simplify right side
1,149,388.42x = 1,015,286,352,951.27 - Step 5: Solve for x
x = 1,015,286,352,951.27/1,149,388.42 - Step 6: Final answer
x = 883,327.46
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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.