Finding the Fourth Proportional to 2,128,415.63, 3,189,851.07 and 864,765.95
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Solution
The fourth proportional to 2,128,415.63, 3,189,851.07 and 864,765.95 is: 1,296,022.52
Step by Step Solution
- Step 1: Write the proportion equation
2,128,415.63 : 3,189,851.07 = 864,765.95 : x - Step 2: Convert to fraction form
2,128,415.63/3,189,851.07 = 864,765.95/x - Step 3: Cross multiply
2,128,415.63x = 3,189,851.07 × 864,765.95 - Step 4: Simplify right side
2,128,415.63x = 2,758,474,574,957.81 - Step 5: Solve for x
x = 2,758,474,574,957.81/2,128,415.63 - Step 6: Final answer
x = 1,296,022.52
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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.