Finding the Fourth Proportional to 1,225,138.91, 1,690,544.72 and 681,138.11
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Solution
The fourth proportional to 1,225,138.91, 1,690,544.72 and 681,138.11 is: 939,888.88
Step by Step Solution
- Step 1: Write the proportion equation
1,225,138.91 : 1,690,544.72 = 681,138.11 : x - Step 2: Convert to fraction form
1,225,138.91/1,690,544.72 = 681,138.11/x - Step 3: Cross multiply
1,225,138.91x = 1,690,544.72 × 681,138.11 - Step 4: Simplify right side
1,225,138.91x = 1,151,494,428,701.40 - Step 5: Solve for x
x = 1,151,494,428,701.40/1,225,138.91 - Step 6: Final answer
x = 939,888.88
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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.