Finding the Fourth Proportional to 1,557,660, 2,149,570.80 and 842,268
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Solution
The fourth proportional to 1,557,660, 2,149,570.80 and 842,268 is: 1,162,329.84
Step by Step Solution
- Step 1: Write the proportion equation
1,557,660 : 2,149,570.80 = 842,268 : x - Step 2: Convert to fraction form
1,557,660/2,149,570.80 = 842,268/x - Step 3: Cross multiply
1,557,660x = 2,149,570.80 × 842,268 - Step 4: Simplify right side
1,557,660x = 1,810,514,698,574.40 - Step 5: Solve for x
x = 1,810,514,698,574.40/1,557,660 - Step 6: Final answer
x = 1,162,329.84
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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.