Finding the Fourth Proportional to 7,212,201.20, 9,952,762.11 and 3,904,421.44
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Solution
The fourth proportional to 7,212,201.20, 9,952,762.11 and 3,904,421.44 is: 5,388,060.69
Step by Step Solution
- Step 1: Write the proportion equation
7,212,201.20 : 9,952,762.11 = 3,904,421.44 : x - Step 2: Convert to fraction form
7,212,201.20/9,952,762.11 = 3,904,421.44/x - Step 3: Cross multiply
7,212,201.20x = 9,952,762.11 × 3,904,421.44 - Step 4: Simplify right side
7,212,201.20x = 38,859,777,769,503.63 - Step 5: Solve for x
x = 38,859,777,769,503.63/7,212,201.20 - Step 6: Final answer
x = 5,388,060.69
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1.5x scale
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.