Finding the Fourth Proportional to 419,771,639.58, 579,286,874.82 and 231,599,923.98
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Solution
The fourth proportional to 419,771,639.58, 579,286,874.82 and 231,599,923.98 is: 319,609,005.28
Step by Step Solution
- Step 1: Write the proportion equation
419,771,639.58 : 579,286,874.82 = 231,599,923.98 : x - Step 2: Convert to fraction form
419,771,639.58/579,286,874.82 = 231,599,923.98/x - Step 3: Cross multiply
419,771,639.58x = 579,286,874.82 × 231,599,923.98 - Step 4: Simplify right side
419,771,639.58x = 134,162,796,170,923,776 - Step 5: Solve for x
x = 134,162,796,170,923,776/419,771,639.58 - Step 6: Final answer
x = 319,609,005.28
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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.