Finding the Fourth Proportional to 678,533.99, 936,310.61 and 392,047.92
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Solution
The fourth proportional to 678,533.99, 936,310.61 and 392,047.92 is: 540,987.83
Step by Step Solution
- Step 1: Write the proportion equation
678,533.99 : 936,310.61 = 392,047.92 : x - Step 2: Convert to fraction form
678,533.99/936,310.61 = 392,047.92/x - Step 3: Cross multiply
678,533.99x = 936,310.61 × 392,047.92 - Step 4: Simplify right side
678,533.99x = 367,078,625,164.19 - Step 5: Solve for x
x = 367,078,625,164.19/678,533.99 - Step 6: Final answer
x = 540,987.83
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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.