Finding the Fourth Proportional to 1,991,420,529.28, 2,748,169,108 and 1,099,354,586.14
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Solution
The fourth proportional to 1,991,420,529.28, 2,748,169,108 and 1,099,354,586.14 is: 1,517,114,174.50
Step by Step Solution
- Step 1: Write the proportion equation
1,991,420,529.28 : 2,748,169,108 = 1,099,354,586.14 : x - Step 2: Convert to fraction form
1,991,420,529.28/2,748,169,108 = 1,099,354,586.14/x - Step 3: Cross multiply
1,991,420,529.28x = 2,748,169,108 × 1,099,354,586.14 - Step 4: Simplify right side
1,991,420,529.28x = 3,021,212,312,368,073,216 - Step 5: Solve for x
x = 3,021,212,312,368,073,216/1,991,420,529.28 - Step 6: Final answer
x = 1,517,114,174.50
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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.