Finding the Fourth Proportional to 789,489.76, 1,089,495.06 and 426,912.70
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Solution
The fourth proportional to 789,489.76, 1,089,495.06 and 426,912.70 is: 589,139.09
Step by Step Solution
- Step 1: Write the proportion equation
789,489.76 : 1,089,495.06 = 426,912.70 : x - Step 2: Convert to fraction form
789,489.76/1,089,495.06 = 426,912.70/x - Step 3: Cross multiply
789,489.76x = 1,089,495.06 × 426,912.70 - Step 4: Simplify right side
789,489.76x = 465,119,277,701.26 - Step 5: Solve for x
x = 465,119,277,701.26/789,489.76 - Step 6: Final answer
x = 589,139.09
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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.