Finding the Fourth Proportional to 1,212,105.48, 1,672,674.81 and 668,228.70
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Solution
The fourth proportional to 1,212,105.48, 1,672,674.81 and 668,228.70 is: 922,138.65
Step by Step Solution
- Step 1: Write the proportion equation
1,212,105.48 : 1,672,674.81 = 668,228.70 : x - Step 2: Convert to fraction form
1,212,105.48/1,672,674.81 = 668,228.70/x - Step 3: Cross multiply
1,212,105.48x = 1,672,674.81 × 668,228.70 - Step 4: Simplify right side
1,212,105.48x = 1,117,729,313,809.05 - Step 5: Solve for x
x = 1,117,729,313,809.05/1,212,105.48 - Step 6: Final answer
x = 922,138.65
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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.