Finding the Fourth Proportional to 7,920,882,132.60, 11,881,323,198.90 and 6,642,394,518.90
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Solution
The fourth proportional to 7,920,882,132.60, 11,881,323,198.90 and 6,642,394,518.90 is: 9,963,591,778.35
Step by Step Solution
- Step 1: Write the proportion equation
7,920,882,132.60 : 11,881,323,198.90 = 6,642,394,518.90 : x - Step 2: Convert to fraction form
7,920,882,132.60/11,881,323,198.90 = 6,642,394,518.90/x - Step 3: Cross multiply
7,920,882,132.60x = 11,881,323,198.90 × 6,642,394,518.90 - Step 4: Simplify right side
7,920,882,132.60x = 78,920,436,093,652,762,624 - Step 5: Solve for x
x = 78,920,436,093,652,762,624/7,920,882,132.60 - Step 6: Final answer
x = 9,963,591,778.35
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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.