Finding the Fourth Proportional to 642,201.96, 886,267.88 and 355,722.01
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Solution
The fourth proportional to 642,201.96, 886,267.88 and 355,722.01 is: 490,912.53
Step by Step Solution
- Step 1: Write the proportion equation
642,201.96 : 886,267.88 = 355,722.01 : x - Step 2: Convert to fraction form
642,201.96/886,267.88 = 355,722.01/x - Step 3: Cross multiply
642,201.96x = 886,267.88 × 355,722.01 - Step 4: Simplify right side
642,201.96x = 315,264,991,672.04 - Step 5: Solve for x
x = 315,264,991,672.04/642,201.96 - Step 6: Final answer
x = 490,912.53
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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.