Finding the Fourth Proportional to 1,313,029,968.72, 1,966,389,033.20 and 751,088,099.68
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Solution
The fourth proportional to 1,313,029,968.72, 1,966,389,033.20 and 751,088,099.68 is: 1,124,826,879.33
Step by Step Solution
- Step 1: Write the proportion equation
1,313,029,968.72 : 1,966,389,033.20 = 751,088,099.68 : x - Step 2: Convert to fraction form
1,313,029,968.72/1,966,389,033.20 = 751,088,099.68/x - Step 3: Cross multiply
1,313,029,968.72x = 1,966,389,033.20 × 751,088,099.68 - Step 4: Simplify right side
1,313,029,968.72x = 1,476,931,402,177,780,480 - Step 5: Solve for x
x = 1,476,931,402,177,780,480/1,313,029,968.72 - Step 6: Final answer
x = 1,124,826,879.33
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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.