Finding the Fourth Proportional to 1,438,818.21, 1,986,160.41 and 981,442.53
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Solution
The fourth proportional to 1,438,818.21, 1,986,160.41 and 981,442.53 is: 1,354,794.01
Step by Step Solution
- Step 1: Write the proportion equation
1,438,818.21 : 1,986,160.41 = 981,442.53 : x - Step 2: Convert to fraction form
1,438,818.21/1,986,160.41 = 981,442.53/x - Step 3: Cross multiply
1,438,818.21x = 1,986,160.41 × 981,442.53 - Step 4: Simplify right side
1,438,818.21x = 1,949,302,297,776.24 - Step 5: Solve for x
x = 1,949,302,297,776.24/1,438,818.21 - Step 6: Final answer
x = 1,354,794.01
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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.