Finding the Fourth Proportional to 789,485.38, 1,089,423.60 and 467,138.99
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Solution
The fourth proportional to 789,485.38, 1,089,423.60 and 467,138.99 is: 644,612.62
Step by Step Solution
- Step 1: Write the proportion equation
789,485.38 : 1,089,423.60 = 467,138.99 : x - Step 2: Convert to fraction form
789,485.38/1,089,423.60 = 467,138.99/x - Step 3: Cross multiply
789,485.38x = 1,089,423.60 × 467,138.99 - Step 4: Simplify right side
789,485.38x = 508,912,240,186.16 - Step 5: Solve for x
x = 508,912,240,186.16/789,485.38 - Step 6: Final answer
x = 644,612.62
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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.