Finding the Fourth Proportional to 1,286,216.40, 1,928,741.40 and 487,232.40
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Solution
The fourth proportional to 1,286,216.40, 1,928,741.40 and 487,232.40 is: 730,627.68
Step by Step Solution
- Step 1: Write the proportion equation
1,286,216.40 : 1,928,741.40 = 487,232.40 : x - Step 2: Convert to fraction form
1,286,216.40/1,928,741.40 = 487,232.40/x - Step 3: Cross multiply
1,286,216.40x = 1,928,741.40 × 487,232.40 - Step 4: Simplify right side
1,286,216.40x = 939,745,301,301.36 - Step 5: Solve for x
x = 939,745,301,301.36/1,286,216.40 - Step 6: Final answer
x = 730,627.68
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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.