Finding the Fourth Proportional to 1,989,702.11, 2,743,838.25 and 1,263,288.71
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Solution
The fourth proportional to 1,989,702.11, 2,743,838.25 and 1,263,288.71 is: 1,742,099.92
Step by Step Solution
- Step 1: Write the proportion equation
1,989,702.11 : 2,743,838.25 = 1,263,288.71 : x - Step 2: Convert to fraction form
1,989,702.11/2,743,838.25 = 1,263,288.71/x - Step 3: Cross multiply
1,989,702.11x = 2,743,838.25 × 1,263,288.71 - Step 4: Simplify right side
1,989,702.11x = 3,466,259,883,291.16 - Step 5: Solve for x
x = 3,466,259,883,291.16/1,989,702.11 - Step 6: Final answer
x = 1,742,099.92
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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.