Finding the Fourth Proportional to 644,460.96, 889,212.96 and 389,806.68
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Solution
The fourth proportional to 644,460.96, 889,212.96 and 389,806.68 is: 537,846.62
Step by Step Solution
- Step 1: Write the proportion equation
644,460.96 : 889,212.96 = 389,806.68 : x - Step 2: Convert to fraction form
644,460.96/889,212.96 = 389,806.68/x - Step 3: Cross multiply
644,460.96x = 889,212.96 × 389,806.68 - Step 4: Simplify right side
644,460.96x = 346,621,151,750.57 - Step 5: Solve for x
x = 346,621,151,750.57/644,460.96 - Step 6: Final answer
x = 537,846.62
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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.