Finding the Fourth Proportional to 642,256.68, 886,302.36 and 355,770.48
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Solution
The fourth proportional to 642,256.68, 886,302.36 and 355,770.48 is: 490,956.69
Step by Step Solution
- Step 1: Write the proportion equation
642,256.68 : 886,302.36 = 355,770.48 : x - Step 2: Convert to fraction form
642,256.68/886,302.36 = 355,770.48/x - Step 3: Cross multiply
642,256.68x = 886,302.36 × 355,770.48 - Step 4: Simplify right side
642,256.68x = 315,320,216,042.33 - Step 5: Solve for x
x = 315,320,216,042.33/642,256.68 - Step 6: Final answer
x = 490,956.69
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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.