Finding the Fourth Proportional to 1,279,431,424.24, 1,919,147,133.12 and 310,083,040.24
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Solution
The fourth proportional to 1,279,431,424.24, 1,919,147,133.12 and 310,083,040.24 is: 465,124,559.57
Step by Step Solution
- Step 1: Write the proportion equation
1,279,431,424.24 : 1,919,147,133.12 = 310,083,040.24 : x - Step 2: Convert to fraction form
1,279,431,424.24/1,919,147,133.12 = 310,083,040.24/x - Step 3: Cross multiply
1,279,431,424.24x = 1,919,147,133.12 × 310,083,040.24 - Step 4: Simplify right side
1,279,431,424.24x = 595,094,977,705,729,536 - Step 5: Solve for x
x = 595,094,977,705,729,536/1,279,431,424.24 - Step 6: Final answer
x = 465,124,559.57
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1.5x scale
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.