Finding the Fourth Proportional to 1,420,481.10, 1,959,639.74 and 869,223.06
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Solution
The fourth proportional to 1,420,481.10, 1,959,639.74 and 869,223.06 is: 1,199,145.88
Step by Step Solution
- Step 1: Write the proportion equation
1,420,481.10 : 1,959,639.74 = 869,223.06 : x - Step 2: Convert to fraction form
1,420,481.10/1,959,639.74 = 869,223.06/x - Step 3: Cross multiply
1,420,481.10x = 1,959,639.74 × 869,223.06 - Step 4: Simplify right side
1,420,481.10x = 1,703,364,057,030.87 - Step 5: Solve for x
x = 1,703,364,057,030.87/1,420,481.10 - Step 6: Final answer
x = 1,199,145.88
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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.