Finding the Fourth Proportional to 642,310.44, 886,323.92 and 355,776.99
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Solution
The fourth proportional to 642,310.44, 886,323.92 and 355,776.99 is: 490,936.52
Step by Step Solution
- Step 1: Write the proportion equation
642,310.44 : 886,323.92 = 355,776.99 : x - Step 2: Convert to fraction form
642,310.44/886,323.92 = 355,776.99/x - Step 3: Cross multiply
642,310.44x = 886,323.92 × 355,776.99 - Step 4: Simplify right side
642,310.44x = 315,333,654,643.72 - Step 5: Solve for x
x = 315,333,654,643.72/642,310.44 - Step 6: Final answer
x = 490,936.52
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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.