Finding the Fourth Proportional to 642,352.05, 886,410.92 and 355,855.05
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Solution
The fourth proportional to 642,352.05, 886,410.92 and 355,855.05 is: 491,060.63
Step by Step Solution
- Step 1: Write the proportion equation
642,352.05 : 886,410.92 = 355,855.05 : x - Step 2: Convert to fraction form
642,352.05/886,410.92 = 355,855.05/x - Step 3: Cross multiply
642,352.05x = 886,410.92 × 355,855.05 - Step 4: Simplify right side
642,352.05x = 315,433,800,477.87 - Step 5: Solve for x
x = 315,433,800,477.87/642,352.05 - Step 6: Final answer
x = 491,060.63
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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.