Finding the Fourth Proportional to 644,608.37, 889,574.38 and 354,237.99
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Solution
The fourth proportional to 644,608.37, 889,574.38 and 354,237.99 is: 488,856.58
Step by Step Solution
- Step 1: Write the proportion equation
644,608.37 : 889,574.38 = 354,237.99 : x - Step 2: Convert to fraction form
644,608.37/889,574.38 = 354,237.99/x - Step 3: Cross multiply
644,608.37x = 889,574.38 × 354,237.99 - Step 4: Simplify right side
644,608.37x = 315,121,040,326.70 - Step 5: Solve for x
x = 315,121,040,326.70/644,608.37 - Step 6: Final answer
x = 488,856.58
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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.