Finding the Fourth Proportional to 485,400.21, 669,703.84 and 281,410.41
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Solution
The fourth proportional to 485,400.21, 669,703.84 and 281,410.41 is: 388,260.31
Step by Step Solution
- Step 1: Write the proportion equation
485,400.21 : 669,703.84 = 281,410.41 : x - Step 2: Convert to fraction form
485,400.21/669,703.84 = 281,410.41/x - Step 3: Cross multiply
485,400.21x = 669,703.84 × 281,410.41 - Step 4: Simplify right side
485,400.21x = 188,461,632,192.97 - Step 5: Solve for x
x = 188,461,632,192.97/485,400.21 - Step 6: Final answer
x = 388,260.31
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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.