Finding the Fourth Proportional to 1,330,021.09, 1,995,311.99 and 431,392.91
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Solution
The fourth proportional to 1,330,021.09, 1,995,311.99 and 431,392.91 is: 647,180.30
Step by Step Solution
- Step 1: Write the proportion equation
1,330,021.09 : 1,995,311.99 = 431,392.91 : x - Step 2: Convert to fraction form
1,330,021.09/1,995,311.99 = 431,392.91/x - Step 3: Cross multiply
1,330,021.09x = 1,995,311.99 × 431,392.91 - Step 4: Simplify right side
1,330,021.09x = 860,763,443,567.03 - Step 5: Solve for x
x = 860,763,443,567.03/1,330,021.09 - Step 6: Final answer
x = 647,180.30
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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.