Finding the Fourth Proportional to 738,241.09, 1,018,777.05 and 428,328.20
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Solution
The fourth proportional to 738,241.09, 1,018,777.05 and 428,328.20 is: 591,095.45
Step by Step Solution
- Step 1: Write the proportion equation
738,241.09 : 1,018,777.05 = 428,328.20 : x - Step 2: Convert to fraction form
738,241.09/1,018,777.05 = 428,328.20/x - Step 3: Cross multiply
738,241.09x = 1,018,777.05 × 428,328.20 - Step 4: Simplify right side
738,241.09x = 436,370,943,645.57 - Step 5: Solve for x
x = 436,370,943,645.57/738,241.09 - Step 6: Final answer
x = 591,095.45
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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.