Finding the Fourth Proportional to 2,130,251.12, 2,939,766.56 and 1,212,435.26
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Solution
The fourth proportional to 2,130,251.12, 2,939,766.56 and 1,212,435.26 is: 1,673,172.05
Step by Step Solution
- Step 1: Write the proportion equation
2,130,251.12 : 2,939,766.56 = 1,212,435.26 : x - Step 2: Convert to fraction form
2,130,251.12/2,939,766.56 = 1,212,435.26/x - Step 3: Cross multiply
2,130,251.12x = 2,939,766.56 × 1,212,435.26 - Step 4: Simplify right side
2,130,251.12x = 3,564,276,633,512.91 - Step 5: Solve for x
x = 3,564,276,633,512.91/2,130,251.12 - Step 6: Final answer
x = 1,673,172.05
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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.