Finding the Fourth Proportional to 639,612.84, 958,369.48 and 218,659.08
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Solution
The fourth proportional to 639,612.84, 958,369.48 and 218,659.08 is: 327,629.74
Step by Step Solution
- Step 1: Write the proportion equation
639,612.84 : 958,369.48 = 218,659.08 : x - Step 2: Convert to fraction form
639,612.84/958,369.48 = 218,659.08/x - Step 3: Cross multiply
639,612.84x = 958,369.48 × 218,659.08 - Step 4: Simplify right side
639,612.84x = 209,556,188,796.88 - Step 5: Solve for x
x = 209,556,188,796.88/639,612.84 - Step 6: Final answer
x = 327,629.74
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.