Finding the Fourth Proportional to 3,989,964.18, 5,506,185.54 and 2,271,195.21
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Solution
The fourth proportional to 3,989,964.18, 5,506,185.54 and 2,271,195.21 is: 3,134,269.30
Step by Step Solution
- Step 1: Write the proportion equation
3,989,964.18 : 5,506,185.54 = 2,271,195.21 : x - Step 2: Convert to fraction form
3,989,964.18/5,506,185.54 = 2,271,195.21/x - Step 3: Cross multiply
3,989,964.18x = 5,506,185.54 × 2,271,195.21 - Step 4: Simplify right side
3,989,964.18x = 12,505,622,223,819.26 - Step 5: Solve for x
x = 12,505,622,223,819.26/3,989,964.18 - Step 6: Final answer
x = 3,134,269.30
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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.