Finding the Fourth Proportional to 1,985,720.14, 2,740,305.72 and 1,080,308.62
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Solution
The fourth proportional to 1,985,720.14, 2,740,305.72 and 1,080,308.62 is: 1,490,832.38
Step by Step Solution
- Step 1: Write the proportion equation
1,985,720.14 : 2,740,305.72 = 1,080,308.62 : x - Step 2: Convert to fraction form
1,985,720.14/2,740,305.72 = 1,080,308.62/x - Step 3: Cross multiply
1,985,720.14x = 2,740,305.72 × 1,080,308.62 - Step 4: Simplify right side
1,985,720.14x = 2,960,375,890,751.31 - Step 5: Solve for x
x = 2,960,375,890,751.31/1,985,720.14 - Step 6: Final answer
x = 1,490,832.38
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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.