Finding the Fourth Proportional to 1,815,315,123.36, 2,505,201,690.96 and 1,011,614,843.28
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Solution
The fourth proportional to 1,815,315,123.36, 2,505,201,690.96 and 1,011,614,843.28 is: 1,396,065,720.70
Step by Step Solution
- Step 1: Write the proportion equation
1,815,315,123.36 : 2,505,201,690.96 = 1,011,614,843.28 : x - Step 2: Convert to fraction form
1,815,315,123.36/2,505,201,690.96 = 1,011,614,843.28/x - Step 3: Cross multiply
1,815,315,123.36x = 2,505,201,690.96 × 1,011,614,843.28 - Step 4: Simplify right side
1,815,315,123.36x = 2,534,299,215,985,291,264 - Step 5: Solve for x
x = 2,534,299,215,985,291,264/1,815,315,123.36 - Step 6: Final answer
x = 1,396,065,720.70
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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.