Finding the Fourth Proportional to 644,392.99, 889,163.47 and 372,408.36
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Solution
The fourth proportional to 644,392.99, 889,163.47 and 372,408.36 is: 513,866.40
Step by Step Solution
- Step 1: Write the proportion equation
644,392.99 : 889,163.47 = 372,408.36 : x - Step 2: Convert to fraction form
644,392.99/889,163.47 = 372,408.36/x - Step 3: Cross multiply
644,392.99x = 889,163.47 × 372,408.36 - Step 4: Simplify right side
644,392.99x = 331,131,903,326.75 - Step 5: Solve for x
x = 331,131,903,326.75/644,392.99 - Step 6: Final answer
x = 513,866.40
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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.