Finding the Fourth Proportional to 1,378,291.14, 2,067,435.50 and 431,735.67
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Solution
The fourth proportional to 1,378,291.14, 2,067,435.50 and 431,735.67 is: 647,603.12
Step by Step Solution
- Step 1: Write the proportion equation
1,378,291.14 : 2,067,435.50 = 431,735.67 : x - Step 2: Convert to fraction form
1,378,291.14/2,067,435.50 = 431,735.67/x - Step 3: Cross multiply
1,378,291.14x = 2,067,435.50 × 431,735.67 - Step 4: Simplify right side
1,378,291.14x = 892,585,648,615.61 - Step 5: Solve for x
x = 892,585,648,615.61/1,378,291.14 - Step 6: Final answer
x = 647,603.12
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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.