Finding the Fourth Proportional to 621,422.46, 930,128.94 and 321,489.99
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Solution
The fourth proportional to 621,422.46, 930,128.94 and 321,489.99 is: 481,197.84
Step by Step Solution
- Step 1: Write the proportion equation
621,422.46 : 930,128.94 = 321,489.99 : x - Step 2: Convert to fraction form
621,422.46/930,128.94 = 321,489.99/x - Step 3: Cross multiply
621,422.46x = 930,128.94 × 321,489.99 - Step 4: Simplify right side
621,422.46x = 299,027,143,619.31 - Step 5: Solve for x
x = 299,027,143,619.31/621,422.46 - Step 6: Final answer
x = 481,197.84
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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.