Finding the Fourth Proportional to 1,396,051.20, 2,094,076.80 and 917,754.30
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Solution
The fourth proportional to 1,396,051.20, 2,094,076.80 and 917,754.30 is: 1,376,631.45
Step by Step Solution
- Step 1: Write the proportion equation
1,396,051.20 : 2,094,076.80 = 917,754.30 : x - Step 2: Convert to fraction form
1,396,051.20/2,094,076.80 = 917,754.30/x - Step 3: Cross multiply
1,396,051.20x = 2,094,076.80 × 917,754.30 - Step 4: Simplify right side
1,396,051.20x = 1,921,847,987,730.24 - Step 5: Solve for x
x = 1,921,847,987,730.24/1,396,051.20 - Step 6: Final answer
x = 1,376,631.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.