Finding the Fourth Proportional to 769,828.80, 1,154,743.20 and 726,283.20
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Solution
The fourth proportional to 769,828.80, 1,154,743.20 and 726,283.20 is: 1,089,424.80
Step by Step Solution
- Step 1: Write the proportion equation
769,828.80 : 1,154,743.20 = 726,283.20 : x - Step 2: Convert to fraction form
769,828.80/1,154,743.20 = 726,283.20/x - Step 3: Cross multiply
769,828.80x = 1,154,743.20 × 726,283.20 - Step 4: Simplify right side
769,828.80x = 838,670,586,474.24 - Step 5: Solve for x
x = 838,670,586,474.24/769,828.80 - Step 6: Final answer
x = 1,089,424.80
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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.