Finding the Fourth Proportional to 1,206,311,926.12, 1,664,612,359.14 and 677,647,191.40
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Solution
The fourth proportional to 1,206,311,926.12, 1,664,612,359.14 and 677,647,191.40 is: 935,098,016.95
Step by Step Solution
- Step 1: Write the proportion equation
1,206,311,926.12 : 1,664,612,359.14 = 677,647,191.40 : x - Step 2: Convert to fraction form
1,206,311,926.12/1,664,612,359.14 = 677,647,191.40/x - Step 3: Cross multiply
1,206,311,926.12x = 1,664,612,359.14 × 677,647,191.40 - Step 4: Simplify right side
1,206,311,926.12x = 1,128,019,889,940,949,120 - Step 5: Solve for x
x = 1,128,019,889,940,949,120/1,206,311,926.12 - Step 6: Final answer
x = 935,098,016.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.