Finding the Fourth Proportional to 678,269.70, 1,016,074.35 and 393,361.70
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Solution
The fourth proportional to 678,269.70, 1,016,074.35 and 393,361.70 is: 589,271.09
Step by Step Solution
- Step 1: Write the proportion equation
678,269.70 : 1,016,074.35 = 393,361.70 : x - Step 2: Convert to fraction form
678,269.70/1,016,074.35 = 393,361.70/x - Step 3: Cross multiply
678,269.70x = 1,016,074.35 × 393,361.70 - Step 4: Simplify right side
678,269.70x = 399,684,728,562.02 - Step 5: Solve for x
x = 399,684,728,562.02/678,269.70 - Step 6: Final answer
x = 589,271.09
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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.