Finding the Fourth Proportional to 1,970,797.96, 2,720,440.74 and 1,291,778.20
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Solution
The fourth proportional to 1,970,797.96, 2,720,440.74 and 1,291,778.20 is: 1,783,138.66
Step by Step Solution
- Step 1: Write the proportion equation
1,970,797.96 : 2,720,440.74 = 1,291,778.20 : x - Step 2: Convert to fraction form
1,970,797.96/2,720,440.74 = 1,291,778.20/x - Step 3: Cross multiply
1,970,797.96x = 2,720,440.74 × 1,291,778.20 - Step 4: Simplify right side
1,970,797.96x = 3,514,206,042,323.87 - Step 5: Solve for x
x = 3,514,206,042,323.87/1,970,797.96 - Step 6: Final answer
x = 1,783,138.66
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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.