Finding the Fourth Proportional to 1,292,591.36, 1,939,772.64 and 451,143.12
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Solution
The fourth proportional to 1,292,591.36, 1,939,772.64 and 451,143.12 is: 677,023.77
Step by Step Solution
- Step 1: Write the proportion equation
1,292,591.36 : 1,939,772.64 = 451,143.12 : x - Step 2: Convert to fraction form
1,292,591.36/1,939,772.64 = 451,143.12/x - Step 3: Cross multiply
1,292,591.36x = 1,939,772.64 × 451,143.12 - Step 4: Simplify right side
1,292,591.36x = 875,115,080,900.24 - Step 5: Solve for x
x = 875,115,080,900.24/1,292,591.36 - Step 6: Final answer
x = 677,023.77
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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.