Finding the Fourth Proportional to 827,107.20, 1,240,660.80 and 328,471.20
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Solution
The fourth proportional to 827,107.20, 1,240,660.80 and 328,471.20 is: 492,706.80
Step by Step Solution
- Step 1: Write the proportion equation
827,107.20 : 1,240,660.80 = 328,471.20 : x - Step 2: Convert to fraction form
827,107.20/1,240,660.80 = 328,471.20/x - Step 3: Cross multiply
827,107.20x = 1,240,660.80 × 328,471.20 - Step 4: Simplify right side
827,107.20x = 407,521,341,768.96 - Step 5: Solve for x
x = 407,521,341,768.96/827,107.20 - Step 6: Final answer
x = 492,706.80
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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.