Finding the Fourth Proportional to 1,434,135.91, 1,979,032.42 and 789,430.18
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Solution
The fourth proportional to 1,434,135.91, 1,979,032.42 and 789,430.18 is: 1,089,372.29
Step by Step Solution
- Step 1: Write the proportion equation
1,434,135.91 : 1,979,032.42 = 789,430.18 : x - Step 2: Convert to fraction form
1,434,135.91/1,979,032.42 = 789,430.18/x - Step 3: Cross multiply
1,434,135.91x = 1,979,032.42 × 789,430.18 - Step 4: Simplify right side
1,434,135.91x = 1,562,307,919,546.44 - Step 5: Solve for x
x = 1,562,307,919,546.44/1,434,135.91 - Step 6: Final answer
x = 1,089,372.29
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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.