Finding the Fourth Proportional to 738,665.60, 1,107,220.80 and 289,212.80
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Solution
The fourth proportional to 738,665.60, 1,107,220.80 and 289,212.80 is: 433,514.74
Step by Step Solution
- Step 1: Write the proportion equation
738,665.60 : 1,107,220.80 = 289,212.80 : x - Step 2: Convert to fraction form
738,665.60/1,107,220.80 = 289,212.80/x - Step 3: Cross multiply
738,665.60x = 1,107,220.80 × 289,212.80 - Step 4: Simplify right side
738,665.60x = 320,222,427,786.24 - Step 5: Solve for x
x = 320,222,427,786.24/738,665.60 - Step 6: Final answer
x = 433,514.74
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.