Finding the Fourth Proportional to 644,734.92, 889,743.06 and 358,249.80
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Solution
The fourth proportional to 644,734.92, 889,743.06 and 358,249.80 is: 494,389.65
Step by Step Solution
- Step 1: Write the proportion equation
644,734.92 : 889,743.06 = 358,249.80 : x - Step 2: Convert to fraction form
644,734.92/889,743.06 = 358,249.80/x - Step 3: Cross multiply
644,734.92x = 889,743.06 × 358,249.80 - Step 4: Simplify right side
644,734.92x = 318,750,273,296.39 - Step 5: Solve for x
x = 318,750,273,296.39/644,734.92 - Step 6: Final answer
x = 494,389.65
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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.