Finding the Fourth Proportional to 1,378,939.10, 1,901,366.79 and 970,910.42
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Solution
The fourth proportional to 1,378,939.10, 1,901,366.79 and 970,910.42 is: 1,338,751.53
Step by Step Solution
- Step 1: Write the proportion equation
1,378,939.10 : 1,901,366.79 = 970,910.42 : x - Step 2: Convert to fraction form
1,378,939.10/1,901,366.79 = 970,910.42/x - Step 3: Cross multiply
1,378,939.10x = 1,901,366.79 × 970,910.42 - Step 4: Simplify right side
1,378,939.10x = 1,846,056,828,652.95 - Step 5: Solve for x
x = 1,846,056,828,652.95/1,378,939.10 - Step 6: Final answer
x = 1,338,751.53
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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.