Finding the Fourth Proportional to 5,221,316.88, 7,831,803.06 and 2,147,201.28
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Solution
The fourth proportional to 5,221,316.88, 7,831,803.06 and 2,147,201.28 is: 3,220,731.08
Step by Step Solution
- Step 1: Write the proportion equation
5,221,316.88 : 7,831,803.06 = 2,147,201.28 : x - Step 2: Convert to fraction form
5,221,316.88/7,831,803.06 = 2,147,201.28/x - Step 3: Cross multiply
5,221,316.88x = 7,831,803.06 × 2,147,201.28 - Step 4: Simplify right side
5,221,316.88x = 16,816,457,555,139.91 - Step 5: Solve for x
x = 16,816,457,555,139.91/5,221,316.88 - Step 6: Final answer
x = 3,220,731.08
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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.