Finding the Fourth Proportional to 678,771.28, 936,649.74 and 392,309.92
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Solution
The fourth proportional to 678,771.28, 936,649.74 and 392,309.92 is: 541,356.12
Step by Step Solution
- Step 1: Write the proportion equation
678,771.28 : 936,649.74 = 392,309.92 : x - Step 2: Convert to fraction form
678,771.28/936,649.74 = 392,309.92/x - Step 3: Cross multiply
678,771.28x = 936,649.74 × 392,309.92 - Step 4: Simplify right side
678,771.28x = 367,456,984,567.42 - Step 5: Solve for x
x = 367,456,984,567.42/678,771.28 - Step 6: Final answer
x = 541,356.12
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.