Finding the Fourth Proportional to 428,379,315.58, 642,649,624.46 and 305,252,186.10
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Solution
The fourth proportional to 428,379,315.58, 642,649,624.46 and 305,252,186.10 is: 457,935,749.06
Step by Step Solution
- Step 1: Write the proportion equation
428,379,315.58 : 642,649,624.46 = 305,252,186.10 : x - Step 2: Convert to fraction form
428,379,315.58/642,649,624.46 = 305,252,186.10/x - Step 3: Cross multiply
428,379,315.58x = 642,649,624.46 × 305,252,186.10 - Step 4: Simplify right side
428,379,315.58x = 196,170,202,762,759,072 - Step 5: Solve for x
x = 196,170,202,762,759,072/428,379,315.58 - Step 6: Final answer
x = 457,935,749.06
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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.