Finding the Fourth Proportional to 987,815.70, 1,481,723.55 and 239,861.70
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Solution
The fourth proportional to 987,815.70, 1,481,723.55 and 239,861.70 is: 359,792.55
Step by Step Solution
- Step 1: Write the proportion equation
987,815.70 : 1,481,723.55 = 239,861.70 : x - Step 2: Convert to fraction form
987,815.70/1,481,723.55 = 239,861.70/x - Step 3: Cross multiply
987,815.70x = 1,481,723.55 × 239,861.70 - Step 4: Simplify right side
987,815.70x = 355,408,729,633.04 - Step 5: Solve for x
x = 355,408,729,633.04/987,815.70 - Step 6: Final answer
x = 359,792.55
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1.5x scale
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.