Finding the Fourth Proportional to 1,639,033.28, 2,256,718.84 and 1,393,535.24
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Solution
The fourth proportional to 1,639,033.28, 2,256,718.84 and 1,393,535.24 is: 1,918,702.49
Step by Step Solution
- Step 1: Write the proportion equation
1,639,033.28 : 2,256,718.84 = 1,393,535.24 : x - Step 2: Convert to fraction form
1,639,033.28/2,256,718.84 = 1,393,535.24/x - Step 3: Cross multiply
1,639,033.28x = 2,256,718.84 × 1,393,535.24 - Step 4: Simplify right side
1,639,033.28x = 3,144,817,230,311.92 - Step 5: Solve for x
x = 3,144,817,230,311.92/1,639,033.28 - Step 6: Final answer
x = 1,918,702.49
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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.