Finding the Fourth Proportional to 1,128,371.25, 1,556,743.68 and 741,395.09
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Solution
The fourth proportional to 1,128,371.25, 1,556,743.68 and 741,395.09 is: 1,022,856.72
Step by Step Solution
- Step 1: Write the proportion equation
1,128,371.25 : 1,556,743.68 = 741,395.09 : x - Step 2: Convert to fraction form
1,128,371.25/1,556,743.68 = 741,395.09/x - Step 3: Cross multiply
1,128,371.25x = 1,556,743.68 × 741,395.09 - Step 4: Simplify right side
1,128,371.25x = 1,154,162,118,887.04 - Step 5: Solve for x
x = 1,154,162,118,887.04/1,128,371.25 - Step 6: Final answer
x = 1,022,856.72
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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.