Finding the Fourth Proportional to 1,276,320,329.40, 1,761,322,057.97 and 689,609,465.40
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Solution
The fourth proportional to 1,276,320,329.40, 1,761,322,057.97 and 689,609,465.40 is: 951,661,064.09
Step by Step Solution
- Step 1: Write the proportion equation
1,276,320,329.40 : 1,761,322,057.97 = 689,609,465.40 : x - Step 2: Convert to fraction form
1,276,320,329.40/1,761,322,057.97 = 689,609,465.40/x - Step 3: Cross multiply
1,276,320,329.40x = 1,761,322,057.97 × 689,609,465.40 - Step 4: Simplify right side
1,276,320,329.40x = 1,214,624,362,797,076,224 - Step 5: Solve for x
x = 1,214,624,362,797,076,224/1,276,320,329.40 - Step 6: Final answer
x = 951,661,064.09
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1.5x scale
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.