Finding the Fourth Proportional to 621,431.46, 930,142.44 and 321,498.99
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Solution
The fourth proportional to 621,431.46, 930,142.44 and 321,498.99 is: 481,211.32
Step by Step Solution
- Step 1: Write the proportion equation
621,431.46 : 930,142.44 = 321,498.99 : x - Step 2: Convert to fraction form
621,431.46/930,142.44 = 321,498.99/x - Step 3: Cross multiply
621,431.46x = 930,142.44 × 321,498.99 - Step 4: Simplify right side
621,431.46x = 299,039,855,016.14 - Step 5: Solve for x
x = 299,039,855,016.14/621,431.46 - Step 6: Final answer
x = 481,211.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.