Finding the Fourth Proportional to 819,604.23, 1,131,164.78 and 480,207.75
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Solution
The fourth proportional to 819,604.23, 1,131,164.78 and 480,207.75 is: 662,751.69
Step by Step Solution
- Step 1: Write the proportion equation
819,604.23 : 1,131,164.78 = 480,207.75 : x - Step 2: Convert to fraction form
819,604.23/1,131,164.78 = 480,207.75/x - Step 3: Cross multiply
819,604.23x = 1,131,164.78 × 480,207.75 - Step 4: Simplify right side
819,604.23x = 543,194,091,482.01 - Step 5: Solve for x
x = 543,194,091,482.01/819,604.23 - Step 6: Final answer
x = 662,751.69
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1.5x scale
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.