Finding the Fourth Proportional to 489,678.40, 734,474.40 and 134,660.80
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Solution
The fourth proportional to 489,678.40, 734,474.40 and 134,660.80 is: 201,979.32
Step by Step Solution
- Step 1: Write the proportion equation
489,678.40 : 734,474.40 = 134,660.80 : x - Step 2: Convert to fraction form
489,678.40/734,474.40 = 134,660.80/x - Step 3: Cross multiply
489,678.40x = 734,474.40 × 134,660.80 - Step 4: Simplify right side
489,678.40x = 98,904,910,283.52 - Step 5: Solve for x
x = 98,904,910,283.52/489,678.40 - Step 6: Final answer
x = 201,979.32
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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.