Finding the Fourth Proportional to 1,247,768.20, 1,871,652.30 and 990,905.05
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Solution
The fourth proportional to 1,247,768.20, 1,871,652.30 and 990,905.05 is: 1,486,357.58
Step by Step Solution
- Step 1: Write the proportion equation
1,247,768.20 : 1,871,652.30 = 990,905.05 : x - Step 2: Convert to fraction form
1,247,768.20/1,871,652.30 = 990,905.05/x - Step 3: Cross multiply
1,247,768.20x = 1,871,652.30 × 990,905.05 - Step 4: Simplify right side
1,247,768.20x = 1,854,629,715,914.12 - Step 5: Solve for x
x = 1,854,629,715,914.12/1,247,768.20 - Step 6: Final answer
x = 1,486,357.58
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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.