Finding the Fourth Proportional to 738,352.80, 1,107,205.20 and 338,860.80
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Solution
The fourth proportional to 738,352.80, 1,107,205.20 and 338,860.80 is: 508,142.50
Step by Step Solution
- Step 1: Write the proportion equation
738,352.80 : 1,107,205.20 = 338,860.80 : x - Step 2: Convert to fraction form
738,352.80/1,107,205.20 = 338,860.80/x - Step 3: Cross multiply
738,352.80x = 1,107,205.20 × 338,860.80 - Step 4: Simplify right side
738,352.80x = 375,188,439,836.16 - Step 5: Solve for x
x = 375,188,439,836.16/738,352.80 - Step 6: Final answer
x = 508,142.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.