Finding the Fourth Proportional to 1,419,040,013.80, 2,128,560,020.70 and 838,564,724.20
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Solution
The fourth proportional to 1,419,040,013.80, 2,128,560,020.70 and 838,564,724.20 is: 1,257,847,086.30
Step by Step Solution
- Step 1: Write the proportion equation
1,419,040,013.80 : 2,128,560,020.70 = 838,564,724.20 : x - Step 2: Convert to fraction form
1,419,040,013.80/2,128,560,020.70 = 838,564,724.20/x - Step 3: Cross multiply
1,419,040,013.80x = 2,128,560,020.70 × 838,564,724.20 - Step 4: Simplify right side
1,419,040,013.80x = 1,784,935,346,701,442,048 - Step 5: Solve for x
x = 1,784,935,346,701,442,048/1,419,040,013.80 - Step 6: Final answer
x = 1,257,847,086.30
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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.