Finding the Fourth Proportional to 860,220.42, 1,290,593.09 and 439,791.54
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Solution
The fourth proportional to 860,220.42, 1,290,593.09 and 439,791.54 is: 659,821.49
Step by Step Solution
- Step 1: Write the proportion equation
860,220.42 : 1,290,593.09 = 439,791.54 : x - Step 2: Convert to fraction form
860,220.42/1,290,593.09 = 439,791.54/x - Step 3: Cross multiply
860,220.42x = 1,290,593.09 × 439,791.54 - Step 4: Simplify right side
860,220.42x = 567,591,922,564.46 - Step 5: Solve for x
x = 567,591,922,564.46/860,220.42 - Step 6: Final answer
x = 659,821.49
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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.