Finding the Fourth Proportional to 678,775.28, 936,655.26 and 392,313.92
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Solution
The fourth proportional to 678,775.28, 936,655.26 and 392,313.92 is: 541,361.64
Step by Step Solution
- Step 1: Write the proportion equation
678,775.28 : 936,655.26 = 392,313.92 : x - Step 2: Convert to fraction form
678,775.28/936,655.26 = 392,313.92/x - Step 3: Cross multiply
678,775.28x = 936,655.26 × 392,313.92 - Step 4: Simplify right side
678,775.28x = 367,462,896,739.22 - Step 5: Solve for x
x = 367,462,896,739.22/678,775.28 - Step 6: Final answer
x = 541,361.64
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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.