Finding the Fourth Proportional to 1,434,133.91, 1,979,029.67 and 789,428.18
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Solution
The fourth proportional to 1,434,133.91, 1,979,029.67 and 789,428.18 is: 1,089,369.53
Step by Step Solution
- Step 1: Write the proportion equation
1,434,133.91 : 1,979,029.67 = 789,428.18 : x - Step 2: Convert to fraction form
1,434,133.91/1,979,029.67 = 789,428.18/x - Step 3: Cross multiply
1,434,133.91x = 1,979,029.67 × 789,428.18 - Step 4: Simplify right side
1,434,133.91x = 1,562,301,776,711.81 - Step 5: Solve for x
x = 1,562,301,776,711.81/1,434,133.91 - Step 6: Final answer
x = 1,089,369.53
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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.