Finding the Fourth Proportional to 1,222,766.99, 1,687,471.14 and 678,902.80
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Solution
The fourth proportional to 1,222,766.99, 1,687,471.14 and 678,902.80 is: 936,915.12
Step by Step Solution
- Step 1: Write the proportion equation
1,222,766.99 : 1,687,471.14 = 678,902.80 : x - Step 2: Convert to fraction form
1,222,766.99/1,687,471.14 = 678,902.80/x - Step 3: Cross multiply
1,222,766.99x = 1,687,471.14 × 678,902.80 - Step 4: Simplify right side
1,222,766.99x = 1,145,628,881,865.19 - Step 5: Solve for x
x = 1,145,628,881,865.19/1,222,766.99 - Step 6: Final answer
x = 936,915.12
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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.