Finding the Fourth Proportional to 820,450.18, 1,132,278 and 457,944.79
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Solution
The fourth proportional to 820,450.18, 1,132,278 and 457,944.79 is: 631,995.49
Step by Step Solution
- Step 1: Write the proportion equation
820,450.18 : 1,132,278 = 457,944.79 : x - Step 2: Convert to fraction form
820,450.18/1,132,278 = 457,944.79/x - Step 3: Cross multiply
820,450.18x = 1,132,278 × 457,944.79 - Step 4: Simplify right side
820,450.18x = 518,520,810,931.62 - Step 5: Solve for x
x = 518,520,810,931.62/820,450.18 - Step 6: Final answer
x = 631,995.49
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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.