Finding the Fourth Proportional to 1,212,982.20, 1,674,453.60 and 783,471.87
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Solution
The fourth proportional to 1,212,982.20, 1,674,453.60 and 783,471.87 is: 1,081,538.78
Step by Step Solution
- Step 1: Write the proportion equation
1,212,982.20 : 1,674,453.60 = 783,471.87 : x - Step 2: Convert to fraction form
1,212,982.20/1,674,453.60 = 783,471.87/x - Step 3: Cross multiply
1,212,982.20x = 1,674,453.60 × 783,471.87 - Step 4: Simplify right side
1,212,982.20x = 1,311,887,293,220.23 - Step 5: Solve for x
x = 1,311,887,293,220.23/1,212,982.20 - Step 6: Final answer
x = 1,081,538.78
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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.