Finding the Fourth Proportional to 1,438,163.98, 1,983,056.99 and 1,175,700.09
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Solution
The fourth proportional to 1,438,163.98, 1,983,056.99 and 1,175,700.09 is: 1,621,150.52
Step by Step Solution
- Step 1: Write the proportion equation
1,438,163.98 : 1,983,056.99 = 1,175,700.09 : x - Step 2: Convert to fraction form
1,438,163.98/1,983,056.99 = 1,175,700.09/x - Step 3: Cross multiply
1,438,163.98x = 1,983,056.99 × 1,175,700.09 - Step 4: Simplify right side
1,438,163.98x = 2,331,480,287,584.97 - Step 5: Solve for x
x = 2,331,480,287,584.97/1,438,163.98 - Step 6: Final answer
x = 1,621,150.52
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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.