Finding the Fourth Proportional to 665,333.91, 918,169.56 and 378,855.14
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Solution
The fourth proportional to 665,333.91, 918,169.56 and 378,855.14 is: 522,825.08
Step by Step Solution
- Step 1: Write the proportion equation
665,333.91 : 918,169.56 = 378,855.14 : x - Step 2: Convert to fraction form
665,333.91/918,169.56 = 378,855.14/x - Step 3: Cross multiply
665,333.91x = 918,169.56 × 378,855.14 - Step 4: Simplify right side
665,333.91x = 347,853,257,197.54 - Step 5: Solve for x
x = 347,853,257,197.54/665,333.91 - Step 6: Final answer
x = 522,825.08
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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.