Finding the Fourth Proportional to 644,457.48, 889,234.08 and 372,425.68
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Solution
The fourth proportional to 644,457.48, 889,234.08 and 372,425.68 is: 513,879.69
Step by Step Solution
- Step 1: Write the proportion equation
644,457.48 : 889,234.08 = 372,425.68 : x - Step 2: Convert to fraction form
644,457.48/889,234.08 = 372,425.68/x - Step 3: Cross multiply
644,457.48x = 889,234.08 × 372,425.68 - Step 4: Simplify right side
644,457.48x = 331,173,606,923.17 - Step 5: Solve for x
x = 331,173,606,923.17/644,457.48 - Step 6: Final answer
x = 513,879.69
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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.