Finding the Fourth Proportional to 2,687,999.81, 3,709,438.09 and 1,480,775.81
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Solution
The fourth proportional to 2,687,999.81, 3,709,438.09 and 1,480,775.81 is: 2,043,469.71
Step by Step Solution
- Step 1: Write the proportion equation
2,687,999.81 : 3,709,438.09 = 1,480,775.81 : x - Step 2: Convert to fraction form
2,687,999.81/3,709,438.09 = 1,480,775.81/x - Step 3: Cross multiply
2,687,999.81x = 3,709,438.09 × 1,480,775.81 - Step 4: Simplify right side
2,687,999.81x = 5,492,846,170,115.47 - Step 5: Solve for x
x = 5,492,846,170,115.47/2,687,999.81 - Step 6: Final answer
x = 2,043,469.71
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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.