Finding the Fourth Proportional to 428,379,305.33, 642,649,609.08 and 305,252,175.80
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Solution
The fourth proportional to 428,379,305.33, 642,649,609.08 and 305,252,175.80 is: 457,935,733.61
Step by Step Solution
- Step 1: Write the proportion equation
428,379,305.33 : 642,649,609.08 = 305,252,175.80 : x - Step 2: Convert to fraction form
428,379,305.33/642,649,609.08 = 305,252,175.80/x - Step 3: Cross multiply
428,379,305.33x = 642,649,609.08 × 305,252,175.80 - Step 4: Simplify right side
428,379,305.33x = 196,170,191,445,476,224 - Step 5: Solve for x
x = 196,170,191,445,476,224/428,379,305.33 - Step 6: Final answer
x = 457,935,733.61
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.