Finding the Fourth Proportional to 8,159,447,924.40, 12,239,171,886.60 and 2,639,263,969.20
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Solution
The fourth proportional to 8,159,447,924.40, 12,239,171,886.60 and 2,639,263,969.20 is: 3,958,895,953.80
Step by Step Solution
- Step 1: Write the proportion equation
8,159,447,924.40 : 12,239,171,886.60 = 2,639,263,969.20 : x - Step 2: Convert to fraction form
8,159,447,924.40/12,239,171,886.60 = 2,639,263,969.20/x - Step 3: Cross multiply
8,159,447,924.40x = 12,239,171,886.60 × 2,639,263,969.20 - Step 4: Simplify right side
8,159,447,924.40x = 32,302,405,373,148,966,912 - Step 5: Solve for x
x = 32,302,405,373,148,966,912/8,159,447,924.40 - Step 6: Final answer
x = 3,958,895,953.80
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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.