Finding the Fourth Proportional to 2,486,220.81, 3,430,959.82 and 1,383,633.75
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Solution
The fourth proportional to 2,486,220.81, 3,430,959.82 and 1,383,633.75 is: 1,909,400.72
Step by Step Solution
- Step 1: Write the proportion equation
2,486,220.81 : 3,430,959.82 = 1,383,633.75 : x - Step 2: Convert to fraction form
2,486,220.81/3,430,959.82 = 1,383,633.75/x - Step 3: Cross multiply
2,486,220.81x = 3,430,959.82 × 1,383,633.75 - Step 4: Simplify right side
2,486,220.81x = 4,747,191,801,845.93 - Step 5: Solve for x
x = 4,747,191,801,845.93/2,486,220.81 - Step 6: Final answer
x = 1,909,400.72
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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.