Finding the Fourth Proportional to 1,311,018,039.36, 1,809,183,491.10 and 716,289,724.44
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Solution
The fourth proportional to 1,311,018,039.36, 1,809,183,491.10 and 716,289,724.44 is: 988,468,125.83
Step by Step Solution
- Step 1: Write the proportion equation
1,311,018,039.36 : 1,809,183,491.10 = 716,289,724.44 : x - Step 2: Convert to fraction form
1,311,018,039.36/1,809,183,491.10 = 716,289,724.44/x - Step 3: Cross multiply
1,311,018,039.36x = 1,809,183,491.10 × 716,289,724.44 - Step 4: Simplify right side
1,311,018,039.36x = 1,295,899,544,301,416,192 - Step 5: Solve for x
x = 1,295,899,544,301,416,192/1,311,018,039.36 - Step 6: Final answer
x = 988,468,125.83
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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.