Finding the Fourth Proportional to 1,291,906.14, 1,780,982.82 and 908,743.74
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Solution
The fourth proportional to 1,291,906.14, 1,780,982.82 and 908,743.74 is: 1,252,766.70
Step by Step Solution
- Step 1: Write the proportion equation
1,291,906.14 : 1,780,982.82 = 908,743.74 : x - Step 2: Convert to fraction form
1,291,906.14/1,780,982.82 = 908,743.74/x - Step 3: Cross multiply
1,291,906.14x = 1,780,982.82 × 908,743.74 - Step 4: Simplify right side
1,291,906.14x = 1,618,456,988,722.55 - Step 5: Solve for x
x = 1,618,456,988,722.55/1,291,906.14 - Step 6: Final answer
x = 1,252,766.70
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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.