Finding the Fourth Proportional to 644,605.37, 889,570.23 and 354,234.99
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Solution
The fourth proportional to 644,605.37, 889,570.23 and 354,234.99 is: 488,852.43
Step by Step Solution
- Step 1: Write the proportion equation
644,605.37 : 889,570.23 = 354,234.99 : x - Step 2: Convert to fraction form
644,605.37/889,570.23 = 354,234.99/x - Step 3: Cross multiply
644,605.37x = 889,570.23 × 354,234.99 - Step 4: Simplify right side
644,605.37x = 315,116,901,528.35 - Step 5: Solve for x
x = 315,116,901,528.35/644,605.37 - Step 6: Final answer
x = 488,852.43
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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.