Finding the Fourth Proportional to 820,128.36, 1,131,777.84 and 457,552.29
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Solution
The fourth proportional to 820,128.36, 1,131,777.84 and 457,552.29 is: 631,422.56
Step by Step Solution
- Step 1: Write the proportion equation
820,128.36 : 1,131,777.84 = 457,552.29 : x - Step 2: Convert to fraction form
820,128.36/1,131,777.84 = 457,552.29/x - Step 3: Cross multiply
820,128.36x = 1,131,777.84 × 457,552.29 - Step 4: Simplify right side
820,128.36x = 517,847,547,136.38 - Step 5: Solve for x
x = 517,847,547,136.38/820,128.36 - Step 6: Final answer
x = 631,422.56
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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.