Finding the Fourth Proportional to 5,012,978,517.55, 7,519,717,542.66 and 1,907,801,821.99
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Solution
The fourth proportional to 5,012,978,517.55, 7,519,717,542.66 and 1,907,801,821.99 is: 2,861,797,787.19
Step by Step Solution
- Step 1: Write the proportion equation
5,012,978,517.55 : 7,519,717,542.66 = 1,907,801,821.99 : x - Step 2: Convert to fraction form
5,012,978,517.55/7,519,717,542.66 = 1,907,801,821.99/x - Step 3: Cross multiply
5,012,978,517.55x = 7,519,717,542.66 × 1,907,801,821.99 - Step 4: Simplify right side
5,012,978,517.55x = 14,346,130,828,736,913,408 - Step 5: Solve for x
x = 14,346,130,828,736,913,408/5,012,978,517.55 - Step 6: Final answer
x = 2,861,797,787.19
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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.