Finding the Fourth Proportional to 1,235,261.97, 1,705,725.39 and 777,140.15
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Solution
The fourth proportional to 1,235,261.97, 1,705,725.39 and 777,140.15 is: 1,073,122.72
Step by Step Solution
- Step 1: Write the proportion equation
1,235,261.97 : 1,705,725.39 = 777,140.15 : x - Step 2: Convert to fraction form
1,235,261.97/1,705,725.39 = 777,140.15/x - Step 3: Cross multiply
1,235,261.97x = 1,705,725.39 × 777,140.15 - Step 4: Simplify right side
1,235,261.97x = 1,325,587,685,443.41 - Step 5: Solve for x
x = 1,325,587,685,443.41/1,235,261.97 - Step 6: Final answer
x = 1,073,122.72
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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.