Finding the Fourth Proportional to 1,542,697.90, 2,129,041.20 and 889,430.20
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Solution
The fourth proportional to 1,542,697.90, 2,129,041.20 and 889,430.20 is: 1,227,481.76
Step by Step Solution
- Step 1: Write the proportion equation
1,542,697.90 : 2,129,041.20 = 889,430.20 : x - Step 2: Convert to fraction form
1,542,697.90/2,129,041.20 = 889,430.20/x - Step 3: Cross multiply
1,542,697.90x = 2,129,041.20 × 889,430.20 - Step 4: Simplify right side
1,542,697.90x = 1,893,633,540,324.24 - Step 5: Solve for x
x = 1,893,633,540,324.24/1,542,697.90 - Step 6: Final answer
x = 1,227,481.76
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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.