Finding the Fourth Proportional to 644,461.20, 889,156.26 and 372,429.99
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Solution
The fourth proportional to 644,461.20, 889,156.26 and 372,429.99 is: 513,837.69
Step by Step Solution
- Step 1: Write the proportion equation
644,461.20 : 889,156.26 = 372,429.99 : x - Step 2: Convert to fraction form
644,461.20/889,156.26 = 372,429.99/x - Step 3: Cross multiply
644,461.20x = 889,156.26 × 372,429.99 - Step 4: Simplify right side
644,461.20x = 331,148,457,020.24 - Step 5: Solve for x
x = 331,148,457,020.24/644,461.20 - Step 6: Final answer
x = 513,837.69
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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.