Finding the Fourth Proportional to 644,337.26, 889,133.36 and 372,422.75
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Solution
The fourth proportional to 644,337.26, 889,133.36 and 372,422.75 is: 513,913.30
Step by Step Solution
- Step 1: Write the proportion equation
644,337.26 : 889,133.36 = 372,422.75 : x - Step 2: Convert to fraction form
644,337.26/889,133.36 = 372,422.75/x - Step 3: Cross multiply
644,337.26x = 889,133.36 × 372,422.75 - Step 4: Simplify right side
644,337.26x = 331,133,484,740.16 - Step 5: Solve for x
x = 331,133,484,740.16/644,337.26 - Step 6: Final answer
x = 513,913.30
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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.