Finding the Fourth Proportional to 1,981,631.92, 2,734,668.12 and 1,076,220.40
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Solution
The fourth proportional to 1,981,631.92, 2,734,668.12 and 1,076,220.40 is: 1,485,192.88
Step by Step Solution
- Step 1: Write the proportion equation
1,981,631.92 : 2,734,668.12 = 1,076,220.40 : x - Step 2: Convert to fraction form
1,981,631.92/2,734,668.12 = 1,076,220.40/x - Step 3: Cross multiply
1,981,631.92x = 2,734,668.12 × 1,076,220.40 - Step 4: Simplify right side
1,981,631.92x = 2,943,105,617,973.65 - Step 5: Solve for x
x = 2,943,105,617,973.65/1,981,631.92 - Step 6: Final answer
x = 1,485,192.88
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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.