Finding the Fourth Proportional to 642,240.42, 886,291.74 and 355,779.06
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Solution
The fourth proportional to 642,240.42, 886,291.74 and 355,779.06 is: 490,975.08
Step by Step Solution
- Step 1: Write the proportion equation
642,240.42 : 886,291.74 = 355,779.06 : x - Step 2: Convert to fraction form
642,240.42/886,291.74 = 355,779.06/x - Step 3: Cross multiply
642,240.42x = 886,291.74 × 355,779.06 - Step 4: Simplify right side
642,240.42x = 315,324,042,142.96 - Step 5: Solve for x
x = 315,324,042,142.96/642,240.42 - Step 6: Final answer
x = 490,975.08
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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.