Finding the Fourth Proportional to 642,128.22, 886,134.69 and 370,194.80
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Solution
The fourth proportional to 642,128.22, 886,134.69 and 370,194.80 is: 510,867.52
Step by Step Solution
- Step 1: Write the proportion equation
642,128.22 : 886,134.69 = 370,194.80 : x - Step 2: Convert to fraction form
642,128.22/886,134.69 = 370,194.80/x - Step 3: Cross multiply
642,128.22x = 886,134.69 × 370,194.80 - Step 4: Simplify right side
642,128.22x = 328,042,449,906.94 - Step 5: Solve for x
x = 328,042,449,906.94/642,128.22 - Step 6: Final answer
x = 510,867.52
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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.