Finding the Fourth Proportional to 1,355,984.75, 1,871,122.67 and 812,106.61
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Solution
The fourth proportional to 1,355,984.75, 1,871,122.67 and 812,106.61 is: 1,120,625.49
Step by Step Solution
- Step 1: Write the proportion equation
1,355,984.75 : 1,871,122.67 = 812,106.61 : x - Step 2: Convert to fraction form
1,355,984.75/1,871,122.67 = 812,106.61/x - Step 3: Cross multiply
1,355,984.75x = 1,871,122.67 × 812,106.61 - Step 4: Simplify right side
1,355,984.75x = 1,519,551,079,072.24 - Step 5: Solve for x
x = 1,519,551,079,072.24/1,355,984.75 - Step 6: Final answer
x = 1,120,625.49
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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.