Finding the Fourth Proportional to 678,305.31, 1,017,601.97 and 257,571.87
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Solution
The fourth proportional to 678,305.31, 1,017,601.97 and 257,571.87 is: 386,412.49
Step by Step Solution
- Step 1: Write the proportion equation
678,305.31 : 1,017,601.97 = 257,571.87 : x - Step 2: Convert to fraction form
678,305.31/1,017,601.97 = 257,571.87/x - Step 3: Cross multiply
678,305.31x = 1,017,601.97 × 257,571.87 - Step 4: Simplify right side
678,305.31x = 262,105,641,040.73 - Step 5: Solve for x
x = 262,105,641,040.73/678,305.31 - Step 6: Final answer
x = 386,412.49
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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.