Finding the Fourth Proportional to 1,297,776.09, 1,790,754.07 and 724,743.21
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Solution
The fourth proportional to 1,297,776.09, 1,790,754.07 and 724,743.21 is: 1,000,046.82
Step by Step Solution
- Step 1: Write the proportion equation
1,297,776.09 : 1,790,754.07 = 724,743.21 : x - Step 2: Convert to fraction form
1,297,776.09/1,790,754.07 = 724,743.21/x - Step 3: Cross multiply
1,297,776.09x = 1,790,754.07 × 724,743.21 - Step 4: Simplify right side
1,297,776.09x = 1,297,836,849,388.65 - Step 5: Solve for x
x = 1,297,836,849,388.65/1,297,776.09 - Step 6: Final answer
x = 1,000,046.82
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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.