Finding the Fourth Proportional to 644,823.79, 889,786.17 and 372,850.53
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Solution
The fourth proportional to 644,823.79, 889,786.17 and 372,850.53 is: 514,492.87
Step by Step Solution
- Step 1: Write the proportion equation
644,823.79 : 889,786.17 = 372,850.53 : x - Step 2: Convert to fraction form
644,823.79/889,786.17 = 372,850.53/x - Step 3: Cross multiply
644,823.79x = 889,786.17 × 372,850.53 - Step 4: Simplify right side
644,823.79x = 331,757,245,071.17 - Step 5: Solve for x
x = 331,757,245,071.17/644,823.79 - Step 6: Final answer
x = 514,492.87
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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.