Finding the Fourth Proportional to 665,698.44, 918,439.54 and 379,015.68
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Solution
The fourth proportional to 665,698.44, 918,439.54 and 379,015.68 is: 522,913.93
Step by Step Solution
- Step 1: Write the proportion equation
665,698.44 : 918,439.54 = 379,015.68 : x - Step 2: Convert to fraction form
665,698.44/918,439.54 = 379,015.68/x - Step 3: Cross multiply
665,698.44x = 918,439.54 × 379,015.68 - Step 4: Simplify right side
665,698.44x = 348,102,986,791.99 - Step 5: Solve for x
x = 348,102,986,791.99/665,698.44 - Step 6: Final answer
x = 522,913.93
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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.