Finding the Fourth Proportional to 2,487,321.20, 3,729,138.60 and 1,686,604.40
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Solution
The fourth proportional to 2,487,321.20, 3,729,138.60 and 1,686,604.40 is: 2,528,656.76
Step by Step Solution
- Step 1: Write the proportion equation
2,487,321.20 : 3,729,138.60 = 1,686,604.40 : x - Step 2: Convert to fraction form
2,487,321.20/3,729,138.60 = 1,686,604.40/x - Step 3: Cross multiply
2,487,321.20x = 3,729,138.60 × 1,686,604.40 - Step 4: Simplify right side
2,487,321.20x = 6,289,581,570,969.84 - Step 5: Solve for x
x = 6,289,581,570,969.84/2,487,321.20 - Step 6: Final answer
x = 2,528,656.76
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.