Finding the Fourth Proportional to 347,964,307.72, 479,744,984.19 and 285,008,480.08
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Solution
The fourth proportional to 347,964,307.72, 479,744,984.19 and 285,008,480.08 is: 392,946,591.75
Step by Step Solution
- Step 1: Write the proportion equation
347,964,307.72 : 479,744,984.19 = 285,008,480.08 : x - Step 2: Convert to fraction form
347,964,307.72/479,744,984.19 = 285,008,480.08/x - Step 3: Cross multiply
347,964,307.72x = 479,744,984.19 × 285,008,480.08 - Step 4: Simplify right side
347,964,307.72x = 136,731,388,769,995,520 - Step 5: Solve for x
x = 136,731,388,769,995,520/347,964,307.72 - Step 6: Final answer
x = 392,946,591.75
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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.