Finding the Fourth Proportional to 499,729.36, 689,626.64 and 281,984.26
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Solution
The fourth proportional to 499,729.36, 689,626.64 and 281,984.26 is: 389,138.34
Step by Step Solution
- Step 1: Write the proportion equation
499,729.36 : 689,626.64 = 281,984.26 : x - Step 2: Convert to fraction form
499,729.36/689,626.64 = 281,984.26/x - Step 3: Cross multiply
499,729.36x = 689,626.64 × 281,984.26 - Step 4: Simplify right side
499,729.36x = 194,463,854,622.70 - Step 5: Solve for x
x = 194,463,854,622.70/499,729.36 - Step 6: Final answer
x = 389,138.34
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.