Finding the Fourth Proportional to 2,847,026.40, 3,928,984.56 and 1,557,921.12
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Solution
The fourth proportional to 2,847,026.40, 3,928,984.56 and 1,557,921.12 is: 2,149,979.37
Step by Step Solution
- Step 1: Write the proportion equation
2,847,026.40 : 3,928,984.56 = 1,557,921.12 : x - Step 2: Convert to fraction form
2,847,026.40/3,928,984.56 = 1,557,921.12/x - Step 3: Cross multiply
2,847,026.40x = 3,928,984.56 × 1,557,921.12 - Step 4: Simplify right side
2,847,026.40x = 6,121,048,026,177.91 - Step 5: Solve for x
x = 6,121,048,026,177.91/2,847,026.40 - Step 6: Final answer
x = 2,149,979.37
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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.