Finding the Fourth Proportional to 5,201,260.40, 7,801,890.60 and 3,185,721.20
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Solution
The fourth proportional to 5,201,260.40, 7,801,890.60 and 3,185,721.20 is: 4,778,581.80
Step by Step Solution
- Step 1: Write the proportion equation
5,201,260.40 : 7,801,890.60 = 3,185,721.20 : x - Step 2: Convert to fraction form
5,201,260.40/7,801,890.60 = 3,185,721.20/x - Step 3: Cross multiply
5,201,260.40x = 7,801,890.60 × 3,185,721.20 - Step 4: Simplify right side
5,201,260.40x = 24,854,648,284,500.72 - Step 5: Solve for x
x = 24,854,648,284,500.72/5,201,260.40 - Step 6: Final answer
x = 4,778,581.80
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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.