Finding the Fourth Proportional to 665,351.87, 918,184.68 and 378,871.97
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Solution
The fourth proportional to 665,351.87, 918,184.68 and 378,871.97 is: 522,842.80
Step by Step Solution
- Step 1: Write the proportion equation
665,351.87 : 918,184.68 = 378,871.97 : x - Step 2: Convert to fraction form
665,351.87/918,184.68 = 378,871.97/x - Step 3: Cross multiply
665,351.87x = 918,184.68 × 378,871.97 - Step 4: Simplify right side
665,351.87x = 347,874,433,944.50 - Step 5: Solve for x
x = 347,874,433,944.50/665,351.87 - Step 6: Final answer
x = 522,842.80
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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.