Finding the Fourth Proportional to 394,607.02, 591,915.99 and 128,368.93
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Solution
The fourth proportional to 394,607.02, 591,915.99 and 128,368.93 is: 192,555.17
Step by Step Solution
- Step 1: Write the proportion equation
394,607.02 : 591,915.99 = 128,368.93 : x - Step 2: Convert to fraction form
394,607.02/591,915.99 = 128,368.93/x - Step 3: Cross multiply
394,607.02x = 591,915.99 × 128,368.93 - Step 4: Simplify right side
394,607.02x = 75,983,622,286.19 - Step 5: Solve for x
x = 75,983,622,286.19/394,607.02 - Step 6: Final answer
x = 192,555.17
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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.