Finding the Fourth Proportional to 1,178,485,880.22, 1,768,029,084.49 and 349,469,806.68
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Solution
The fourth proportional to 1,178,485,880.22, 1,768,029,084.49 and 349,469,806.68 is: 524,293,750.76
Step by Step Solution
- Step 1: Write the proportion equation
1,178,485,880.22 : 1,768,029,084.49 = 349,469,806.68 : x - Step 2: Convert to fraction form
1,178,485,880.22/1,768,029,084.49 = 349,469,806.68/x - Step 3: Cross multiply
1,178,485,880.22x = 1,768,029,084.49 × 349,469,806.68 - Step 4: Simplify right side
1,178,485,880.22x = 617,872,782,361,337,728 - Step 5: Solve for x
x = 617,872,782,361,337,728/1,178,485,880.22 - Step 6: Final answer
x = 524,293,750.76
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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.