Finding the Fourth Proportional to 499,420.26, 689,042.93 and 305,625.94
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Solution
The fourth proportional to 499,420.26, 689,042.93 and 305,625.94 is: 421,667.70
Step by Step Solution
- Step 1: Write the proportion equation
499,420.26 : 689,042.93 = 305,625.94 : x - Step 2: Convert to fraction form
499,420.26/689,042.93 = 305,625.94/x - Step 3: Cross multiply
499,420.26x = 689,042.93 × 305,625.94 - Step 4: Simplify right side
499,420.26x = 210,589,389,930.87 - Step 5: Solve for x
x = 210,589,389,930.87/499,420.26 - Step 6: Final answer
x = 421,667.70
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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.