Finding the Fourth Proportional to 1,434,134.40, 1,979,030.36 and 789,428.68
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Solution
The fourth proportional to 1,434,134.40, 1,979,030.36 and 789,428.68 is: 1,089,370.23
Step by Step Solution
- Step 1: Write the proportion equation
1,434,134.40 : 1,979,030.36 = 789,428.68 : x - Step 2: Convert to fraction form
1,434,134.40/1,979,030.36 = 789,428.68/x - Step 3: Cross multiply
1,434,134.40x = 1,979,030.36 × 789,428.68 - Step 4: Simplify right side
1,434,134.40x = 1,562,303,324,774.73 - Step 5: Solve for x
x = 1,562,303,324,774.73/1,434,134.40 - Step 6: Final answer
x = 1,089,370.23
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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.