Finding the Fourth Proportional to 1,284,351,653.35, 1,926,531,071.43 and 399,166,449.65
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Solution
The fourth proportional to 1,284,351,653.35, 1,926,531,071.43 and 399,166,449.65 is: 598,750,790.66
Step by Step Solution
- Step 1: Write the proportion equation
1,284,351,653.35 : 1,926,531,071.43 = 399,166,449.65 : x - Step 2: Convert to fraction form
1,284,351,653.35/1,926,531,071.43 = 399,166,449.65/x - Step 3: Cross multiply
1,284,351,653.35x = 1,926,531,071.43 × 399,166,449.65 - Step 4: Simplify right side
1,284,351,653.35x = 769,006,567,923,123,584 - Step 5: Solve for x
x = 769,006,567,923,123,584/1,284,351,653.35 - Step 6: Final answer
x = 598,750,790.66
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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.