Finding the Fourth Proportional to 1,292,023.12, 1,782,991.92 and 719,198.62
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Solution
The fourth proportional to 1,292,023.12, 1,782,991.92 and 719,198.62 is: 992,494.10
Step by Step Solution
- Step 1: Write the proportion equation
1,292,023.12 : 1,782,991.92 = 719,198.62 : x - Step 2: Convert to fraction form
1,292,023.12/1,782,991.92 = 719,198.62/x - Step 3: Cross multiply
1,292,023.12x = 1,782,991.92 × 719,198.62 - Step 4: Simplify right side
1,292,023.12x = 1,282,325,328,335.15 - Step 5: Solve for x
x = 1,282,325,328,335.15/1,292,023.12 - Step 6: Final answer
x = 992,494.10
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1.5x scale
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.