Finding the Fourth Proportional to 1,989,702.63, 2,743,839 and 1,263,289.23
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Solution
The fourth proportional to 1,989,702.63, 2,743,839 and 1,263,289.23 is: 1,742,100.66
Step by Step Solution
- Step 1: Write the proportion equation
1,989,702.63 : 2,743,839 = 1,263,289.23 : x - Step 2: Convert to fraction form
1,989,702.63/2,743,839 = 1,263,289.23/x - Step 3: Cross multiply
1,989,702.63x = 2,743,839 × 1,263,289.23 - Step 4: Simplify right side
1,989,702.63x = 3,466,262,257,553.97 - Step 5: Solve for x
x = 3,466,262,257,553.97/1,989,702.63 - Step 6: Final answer
x = 1,742,100.66
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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.