Finding the Fourth Proportional to 1,089,211.21, 1,503,130.79 and 605,776.55
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Solution
The fourth proportional to 1,089,211.21, 1,503,130.79 and 605,776.55 is: 835,982.38
Step by Step Solution
- Step 1: Write the proportion equation
1,089,211.21 : 1,503,130.79 = 605,776.55 : x - Step 2: Convert to fraction form
1,089,211.21/1,503,130.79 = 605,776.55/x - Step 3: Cross multiply
1,089,211.21x = 1,503,130.79 × 605,776.55 - Step 4: Simplify right side
1,089,211.21x = 910,561,381,136.09 - Step 5: Solve for x
x = 910,561,381,136.09/1,089,211.21 - Step 6: Final answer
x = 835,982.38
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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.