Finding the Fourth Proportional to 7,638,163.58, 11,462,717.73 and 2,780,459.93
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Solution
The fourth proportional to 7,638,163.58, 11,462,717.73 and 2,780,459.93 is: 4,172,681.95
Step by Step Solution
- Step 1: Write the proportion equation
7,638,163.58 : 11,462,717.73 = 2,780,459.93 : x - Step 2: Convert to fraction form
7,638,163.58/11,462,717.73 = 2,780,459.93/x - Step 3: Cross multiply
7,638,163.58x = 11,462,717.73 × 2,780,459.93 - Step 4: Simplify right side
7,638,163.58x = 31,871,627,337,165.56 - Step 5: Solve for x
x = 31,871,627,337,165.56/7,638,163.58 - Step 6: Final answer
x = 4,172,681.95
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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.