Finding the Fourth Proportional to 749,147.75, 1,123,722.71 and 305,915.75
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Solution
The fourth proportional to 749,147.75, 1,123,722.71 and 305,915.75 is: 458,874.07
Step by Step Solution
- Step 1: Write the proportion equation
749,147.75 : 1,123,722.71 = 305,915.75 : x - Step 2: Convert to fraction form
749,147.75/1,123,722.71 = 305,915.75/x - Step 3: Cross multiply
749,147.75x = 1,123,722.71 × 305,915.75 - Step 4: Simplify right side
749,147.75x = 343,764,475,621.68 - Step 5: Solve for x
x = 343,764,475,621.68/749,147.75 - Step 6: Final answer
x = 458,874.07
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1.5x scale
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.