Finding the Fourth Proportional to 1,281,079.19, 1,920,965.22 and 427,843.49
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Solution
The fourth proportional to 1,281,079.19, 1,920,965.22 and 427,843.49 is: 641,546.95
Step by Step Solution
- Step 1: Write the proportion equation
1,281,079.19 : 1,920,965.22 = 427,843.49 : x - Step 2: Convert to fraction form
1,281,079.19/1,920,965.22 = 427,843.49/x - Step 3: Cross multiply
1,281,079.19x = 1,920,965.22 × 427,843.49 - Step 4: Simplify right side
1,281,079.19x = 821,872,454,288.59 - Step 5: Solve for x
x = 821,872,454,288.59/1,281,079.19 - Step 6: Final answer
x = 641,546.95
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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.