Finding the Fourth Proportional to 1,330,021.34, 1,995,312.36 and 431,393.17
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Solution
The fourth proportional to 1,330,021.34, 1,995,312.36 and 431,393.17 is: 647,180.68
Step by Step Solution
- Step 1: Write the proportion equation
1,330,021.34 : 1,995,312.36 = 431,393.17 : x - Step 2: Convert to fraction form
1,330,021.34/1,995,312.36 = 431,393.17/x - Step 3: Cross multiply
1,330,021.34x = 1,995,312.36 × 431,393.17 - Step 4: Simplify right side
1,330,021.34x = 860,764,114,144.02 - Step 5: Solve for x
x = 860,764,114,144.02/1,330,021.34 - Step 6: Final answer
x = 647,180.68
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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.