Finding the Fourth Proportional to 644,697.62, 889,630.62 and 372,783.13
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Solution
The fourth proportional to 644,697.62, 889,630.62 and 372,783.13 is: 514,410.60
Step by Step Solution
- Step 1: Write the proportion equation
644,697.62 : 889,630.62 = 372,783.13 : x - Step 2: Convert to fraction form
644,697.62/889,630.62 = 372,783.13/x - Step 3: Cross multiply
644,697.62x = 889,630.62 × 372,783.13 - Step 4: Simplify right side
644,697.62x = 331,639,287,067.44 - Step 5: Solve for x
x = 331,639,287,067.44/644,697.62 - Step 6: Final answer
x = 514,410.60
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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.