Finding the Fourth Proportional to 1,152,081,628.60, 1,589,701,619.34 and 699,724,197.70
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Solution
The fourth proportional to 1,152,081,628.60, 1,589,701,619.34 and 699,724,197.70 is: 965,515,517.79
Step by Step Solution
- Step 1: Write the proportion equation
1,152,081,628.60 : 1,589,701,619.34 = 699,724,197.70 : x - Step 2: Convert to fraction form
1,152,081,628.60/1,589,701,619.34 = 699,724,197.70/x - Step 3: Cross multiply
1,152,081,628.60x = 1,589,701,619.34 × 699,724,197.70 - Step 4: Simplify right side
1,152,081,628.60x = 1,112,352,690,175,072,256 - Step 5: Solve for x
x = 1,112,352,690,175,072,256/1,152,081,628.60 - Step 6: Final answer
x = 965,515,517.79
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.