Finding the Fourth Proportional to 519,988.36, 717,588.66 and 305,131.96
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Solution
The fourth proportional to 519,988.36, 717,588.66 and 305,131.96 is: 421,084.88
Step by Step Solution
- Step 1: Write the proportion equation
519,988.36 : 717,588.66 = 305,131.96 : x - Step 2: Convert to fraction form
519,988.36/717,588.66 = 305,131.96/x - Step 3: Cross multiply
519,988.36x = 717,588.66 × 305,131.96 - Step 4: Simplify right side
519,988.36x = 218,959,234,299.57 - Step 5: Solve for x
x = 218,959,234,299.57/519,988.36 - Step 6: Final answer
x = 421,084.88
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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.