Finding the Fourth Proportional to 1,979,245,664.40, 2,969,250,346.72 and 752,318,194.08
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Solution
The fourth proportional to 1,979,245,664.40, 2,969,250,346.72 and 752,318,194.08 is: 1,128,622,433.69
Step by Step Solution
- Step 1: Write the proportion equation
1,979,245,664.40 : 2,969,250,346.72 = 752,318,194.08 : x - Step 2: Convert to fraction form
1,979,245,664.40/2,969,250,346.72 = 752,318,194.08/x - Step 3: Cross multiply
1,979,245,664.40x = 2,969,250,346.72 × 752,318,194.08 - Step 4: Simplify right side
1,979,245,664.40x = 2,233,821,058,615,804,160 - Step 5: Solve for x
x = 2,233,821,058,615,804,160/1,979,245,664.40 - Step 6: Final answer
x = 1,128,622,433.69
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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.