Finding the Fourth Proportional to 726,158.10, 1,086,907.98 and 388,354.08
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Solution
The fourth proportional to 726,158.10, 1,086,907.98 and 388,354.08 is: 581,285.46
Step by Step Solution
- Step 1: Write the proportion equation
726,158.10 : 1,086,907.98 = 388,354.08 : x - Step 2: Convert to fraction form
726,158.10/1,086,907.98 = 388,354.08/x - Step 3: Cross multiply
726,158.10x = 1,086,907.98 × 388,354.08 - Step 4: Simplify right side
726,158.10x = 422,105,148,617.56 - Step 5: Solve for x
x = 422,105,148,617.56/726,158.10 - Step 6: Final answer
x = 581,285.46
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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.