Finding the Fourth Proportional to 411,542.20, 618,350.10 and 261,854.20
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Solution
The fourth proportional to 411,542.20, 618,350.10 and 261,854.20 is: 393,440.99
Step by Step Solution
- Step 1: Write the proportion equation
411,542.20 : 618,350.10 = 261,854.20 : x - Step 2: Convert to fraction form
411,542.20/618,350.10 = 261,854.20/x - Step 3: Cross multiply
411,542.20x = 618,350.10 × 261,854.20 - Step 4: Simplify right side
411,542.20x = 161,917,570,755.42 - Step 5: Solve for x
x = 161,917,570,755.42/411,542.20 - Step 6: Final answer
x = 393,440.99
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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.