Finding the Fourth Proportional to 1,286,272.36, 1,775,162.28 and 713,497.60
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Solution
The fourth proportional to 1,286,272.36, 1,775,162.28 and 713,497.60 is: 984,685.72
Step by Step Solution
- Step 1: Write the proportion equation
1,286,272.36 : 1,775,162.28 = 713,497.60 : x - Step 2: Convert to fraction form
1,286,272.36/1,775,162.28 = 713,497.60/x - Step 3: Cross multiply
1,286,272.36x = 1,775,162.28 × 713,497.60 - Step 4: Simplify right side
1,286,272.36x = 1,266,574,026,390.53 - Step 5: Solve for x
x = 1,266,574,026,390.53/1,286,272.36 - Step 6: Final answer
x = 984,685.72
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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.