Finding the Fourth Proportional to 419,321.80, 628,982.70 and 279,353.80
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Solution
The fourth proportional to 419,321.80, 628,982.70 and 279,353.80 is: 419,030.70
Step by Step Solution
- Step 1: Write the proportion equation
419,321.80 : 628,982.70 = 279,353.80 : x - Step 2: Convert to fraction form
419,321.80/628,982.70 = 279,353.80/x - Step 3: Cross multiply
419,321.80x = 628,982.70 × 279,353.80 - Step 4: Simplify right side
419,321.80x = 175,708,707,379.26 - Step 5: Solve for x
x = 175,708,707,379.26/419,321.80 - Step 6: Final answer
x = 419,030.70
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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.