Finding the Fourth Proportional to 820,129.11, 1,131,778.88 and 457,553.05
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Solution
The fourth proportional to 820,129.11, 1,131,778.88 and 457,553.05 is: 631,423.60
Step by Step Solution
- Step 1: Write the proportion equation
820,129.11 : 1,131,778.88 = 457,553.05 : x - Step 2: Convert to fraction form
820,129.11/1,131,778.88 = 457,553.05/x - Step 3: Cross multiply
820,129.11x = 1,131,778.88 × 457,553.05 - Step 4: Simplify right side
820,129.11x = 517,848,873,352.37 - Step 5: Solve for x
x = 517,848,873,352.37/820,129.11 - Step 6: Final answer
x = 631,423.60
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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.