Finding the Fourth Proportional to 743,028.81, 1,025,383.70 and 420,801.63
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Solution
The fourth proportional to 743,028.81, 1,025,383.70 and 420,801.63 is: 580,708.48
Step by Step Solution
- Step 1: Write the proportion equation
743,028.81 : 1,025,383.70 = 420,801.63 : x - Step 2: Convert to fraction form
743,028.81/1,025,383.70 = 420,801.63/x - Step 3: Cross multiply
743,028.81x = 1,025,383.70 × 420,801.63 - Step 4: Simplify right side
743,028.81x = 431,483,130,231.42 - Step 5: Solve for x
x = 431,483,130,231.42/743,028.81 - Step 6: Final answer
x = 580,708.48
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1.5x scale
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.