Finding the Fourth Proportional to 1,912,593.12, 2,639,395.80 and 1,053,183.84
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Solution
The fourth proportional to 1,912,593.12, 2,639,395.80 and 1,053,183.84 is: 1,453,403.22
Step by Step Solution
- Step 1: Write the proportion equation
1,912,593.12 : 2,639,395.80 = 1,053,183.84 : x - Step 2: Convert to fraction form
1,912,593.12/2,639,395.80 = 1,053,183.84/x - Step 3: Cross multiply
1,912,593.12x = 2,639,395.80 × 1,053,183.84 - Step 4: Simplify right side
1,912,593.12x = 2,779,769,003,923.87 - Step 5: Solve for x
x = 2,779,769,003,923.87/1,912,593.12 - Step 6: Final answer
x = 1,453,403.22
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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.