Finding the Fourth Proportional to 644,607.87, 889,573.69 and 354,237.49
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Solution
The fourth proportional to 644,607.87, 889,573.69 and 354,237.49 is: 488,855.89
Step by Step Solution
- Step 1: Write the proportion equation
644,607.87 : 889,573.69 = 354,237.49 : x - Step 2: Convert to fraction form
644,607.87/889,573.69 = 354,237.49/x - Step 3: Cross multiply
644,607.87x = 889,573.69 × 354,237.49 - Step 4: Simplify right side
644,607.87x = 315,120,351,115.64 - Step 5: Solve for x
x = 315,120,351,115.64/644,607.87 - Step 6: Final answer
x = 488,855.89
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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.