Finding the Fourth Proportional to 1,107,481,291.20, 1,661,095,965.60 and 289,676,260.80
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Solution
The fourth proportional to 1,107,481,291.20, 1,661,095,965.60 and 289,676,260.80 is: 434,481,441.78
Step by Step Solution
- Step 1: Write the proportion equation
1,107,481,291.20 : 1,661,095,965.60 = 289,676,260.80 : x - Step 2: Convert to fraction form
1,107,481,291.20/1,661,095,965.60 = 289,676,260.80/x - Step 3: Cross multiply
1,107,481,291.20x = 1,661,095,965.60 × 289,676,260.80 - Step 4: Simplify right side
1,107,481,291.20x = 481,180,068,144,973,440 - Step 5: Solve for x
x = 481,180,068,144,973,440/1,107,481,291.20 - Step 6: Final answer
x = 434,481,441.78
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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.