Finding the Fourth Proportional to 1,311,933,118.20, 1,968,396,694.92 and 787,668,335.88
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Solution
The fourth proportional to 1,311,933,118.20, 1,968,396,694.92 and 787,668,335.88 is: 1,181,800,907.02
Step by Step Solution
- Step 1: Write the proportion equation
1,311,933,118.20 : 1,968,396,694.92 = 787,668,335.88 : x - Step 2: Convert to fraction form
1,311,933,118.20/1,968,396,694.92 = 787,668,335.88/x - Step 3: Cross multiply
1,311,933,118.20x = 1,968,396,694.92 × 787,668,335.88 - Step 4: Simplify right side
1,311,933,118.20x = 1,550,443,749,039,328,512 - Step 5: Solve for x
x = 1,550,443,749,039,328,512/1,311,933,118.20 - Step 6: Final answer
x = 1,181,800,907.02
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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.