Finding the Fourth Proportional to 2,445,408,872.80, 3,668,113,309.20 and 809,633,474.80
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Solution
The fourth proportional to 2,445,408,872.80, 3,668,113,309.20 and 809,633,474.80 is: 1,214,450,212.20
Step by Step Solution
- Step 1: Write the proportion equation
2,445,408,872.80 : 3,668,113,309.20 = 809,633,474.80 : x - Step 2: Convert to fraction form
2,445,408,872.80/3,668,113,309.20 = 809,633,474.80/x - Step 3: Cross multiply
2,445,408,872.80x = 3,668,113,309.20 × 809,633,474.80 - Step 4: Simplify right side
2,445,408,872.80x = 2,969,827,324,487,722,496 - Step 5: Solve for x
x = 2,969,827,324,487,722,496/2,445,408,872.80 - Step 6: Final answer
x = 1,214,450,212.20
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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.