Finding the Fourth Proportional to 1,389,556.96, 2,072,652.56 and 1,261,991.68
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Solution
The fourth proportional to 1,389,556.96, 2,072,652.56 and 1,261,991.68 is: 1,882,377.16
Step by Step Solution
- Step 1: Write the proportion equation
1,389,556.96 : 2,072,652.56 = 1,261,991.68 : x - Step 2: Convert to fraction form
1,389,556.96/2,072,652.56 = 1,261,991.68/x - Step 3: Cross multiply
1,389,556.96x = 2,072,652.56 × 1,261,991.68 - Step 4: Simplify right side
1,389,556.96x = 2,615,670,286,250.70 - Step 5: Solve for x
x = 2,615,670,286,250.70/1,389,556.96 - Step 6: Final answer
x = 1,882,377.16
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.