Finding the Fourth Proportional to 1,128,057.24, 1,556,620.56 and 644,526.12
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Solution
The fourth proportional to 1,128,057.24, 1,556,620.56 and 644,526.12 is: 889,389.81
Step by Step Solution
- Step 1: Write the proportion equation
1,128,057.24 : 1,556,620.56 = 644,526.12 : x - Step 2: Convert to fraction form
1,128,057.24/1,556,620.56 = 644,526.12/x - Step 3: Cross multiply
1,128,057.24x = 1,556,620.56 × 644,526.12 - Step 4: Simplify right side
1,128,057.24x = 1,003,282,609,849.03 - Step 5: Solve for x
x = 1,003,282,609,849.03/1,128,057.24 - Step 6: Final answer
x = 889,389.81
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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.