Finding the Fourth Proportional to 1,372,015.70, 2,048,235.35 and 1,280,840.14
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Solution
The fourth proportional to 1,372,015.70, 2,048,235.35 and 1,280,840.14 is: 1,912,122.47
Step by Step Solution
- Step 1: Write the proportion equation
1,372,015.70 : 2,048,235.35 = 1,280,840.14 : x - Step 2: Convert to fraction form
1,372,015.70/2,048,235.35 = 1,280,840.14/x - Step 3: Cross multiply
1,372,015.70x = 2,048,235.35 × 1,280,840.14 - Step 4: Simplify right side
1,372,015.70x = 2,623,462,052,446.95 - Step 5: Solve for x
x = 2,623,462,052,446.95/1,372,015.70 - Step 6: Final answer
x = 1,912,122.47
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.