Finding the Fourth Proportional to 1,128,263.31, 1,557,232.56 and 765,803.97
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Solution
The fourth proportional to 1,128,263.31, 1,557,232.56 and 765,803.97 is: 1,056,965.04
Step by Step Solution
- Step 1: Write the proportion equation
1,128,263.31 : 1,557,232.56 = 765,803.97 : x - Step 2: Convert to fraction form
1,128,263.31/1,557,232.56 = 765,803.97/x - Step 3: Cross multiply
1,128,263.31x = 1,557,232.56 × 765,803.97 - Step 4: Simplify right side
1,128,263.31x = 1,192,534,876,661.26 - Step 5: Solve for x
x = 1,192,534,876,661.26/1,128,263.31 - Step 6: Final answer
x = 1,056,965.04
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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.