Finding the Fourth Proportional to 644,728.24, 889,745.01 and 354,334.54
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Solution
The fourth proportional to 644,728.24, 889,745.01 and 354,334.54 is: 488,992.68
Step by Step Solution
- Step 1: Write the proportion equation
644,728.24 : 889,745.01 = 354,334.54 : x - Step 2: Convert to fraction form
644,728.24/889,745.01 = 354,334.54/x - Step 3: Cross multiply
644,728.24x = 889,745.01 × 354,334.54 - Step 4: Simplify right side
644,728.24x = 315,267,388,835.65 - Step 5: Solve for x
x = 315,267,388,835.65/644,728.24 - Step 6: Final answer
x = 488,992.68
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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.