Finding the Fourth Proportional to 831,431.20, 1,247,146.80 and 723,296.80
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Solution
The fourth proportional to 831,431.20, 1,247,146.80 and 723,296.80 is: 1,084,945.20
Step by Step Solution
- Step 1: Write the proportion equation
831,431.20 : 1,247,146.80 = 723,296.80 : x - Step 2: Convert to fraction form
831,431.20/1,247,146.80 = 723,296.80/x - Step 3: Cross multiply
831,431.20x = 1,247,146.80 × 723,296.80 - Step 4: Simplify right side
831,431.20x = 902,057,289,570.24 - Step 5: Solve for x
x = 902,057,289,570.24/831,431.20 - Step 6: Final answer
x = 1,084,945.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.