Finding the Fourth Proportional to 1,378,537.90, 2,067,807.58 and 431,982.70
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Solution
The fourth proportional to 1,378,537.90, 2,067,807.58 and 431,982.70 is: 647,974.28
Step by Step Solution
- Step 1: Write the proportion equation
1,378,537.90 : 2,067,807.58 = 431,982.70 : x - Step 2: Convert to fraction form
1,378,537.90/2,067,807.58 = 431,982.70/x - Step 3: Cross multiply
1,378,537.90x = 2,067,807.58 × 431,982.70 - Step 4: Simplify right side
1,378,537.90x = 893,257,101,488.87 - Step 5: Solve for x
x = 893,257,101,488.87/1,378,537.90 - Step 6: Final answer
x = 647,974.28
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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.