Finding the Fourth Proportional to 1,992,905,165.70, 2,989,357,748.55 and 682,371,659.70
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Solution
The fourth proportional to 1,992,905,165.70, 2,989,357,748.55 and 682,371,659.70 is: 1,023,557,489.55
Step by Step Solution
- Step 1: Write the proportion equation
1,992,905,165.70 : 2,989,357,748.55 = 682,371,659.70 : x - Step 2: Convert to fraction form
1,992,905,165.70/2,989,357,748.55 = 682,371,659.70/x - Step 3: Cross multiply
1,992,905,165.70x = 2,989,357,748.55 × 682,371,659.70 - Step 4: Simplify right side
1,992,905,165.70x = 2,039,853,008,315,119,104 - Step 5: Solve for x
x = 2,039,853,008,315,119,104/1,992,905,165.70 - Step 6: Final answer
x = 1,023,557,489.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.