Finding the Fourth Proportional to 738,078.10, 1,107,117.15 and 486,135.70
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Solution
The fourth proportional to 738,078.10, 1,107,117.15 and 486,135.70 is: 729,203.55
Step by Step Solution
- Step 1: Write the proportion equation
738,078.10 : 1,107,117.15 = 486,135.70 : x - Step 2: Convert to fraction form
738,078.10/1,107,117.15 = 486,135.70/x - Step 3: Cross multiply
738,078.10x = 1,107,117.15 × 486,135.70 - Step 4: Simplify right side
738,078.10x = 538,209,170,697.26 - Step 5: Solve for x
x = 538,209,170,697.26/738,078.10 - Step 6: Final answer
x = 729,203.55
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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.