Finding the Fourth Proportional to 1,380,879.36, 1,905,574.94 and 769,031.96
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Solution
The fourth proportional to 1,380,879.36, 1,905,574.94 and 769,031.96 is: 1,061,242.62
Step by Step Solution
- Step 1: Write the proportion equation
1,380,879.36 : 1,905,574.94 = 769,031.96 : x - Step 2: Convert to fraction form
1,380,879.36/1,905,574.94 = 769,031.96/x - Step 3: Cross multiply
1,380,879.36x = 1,905,574.94 × 769,031.96 - Step 4: Simplify right side
1,380,879.36x = 1,465,448,031,035.08 - Step 5: Solve for x
x = 1,465,448,031,035.08/1,380,879.36 - Step 6: Final answer
x = 1,061,242.62
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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.