Finding the Fourth Proportional to 1,259,866.80, 1,889,800.20 and 728,425.80
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Solution
The fourth proportional to 1,259,866.80, 1,889,800.20 and 728,425.80 is: 1,092,638.70
Step by Step Solution
- Step 1: Write the proportion equation
1,259,866.80 : 1,889,800.20 = 728,425.80 : x - Step 2: Convert to fraction form
1,259,866.80/1,889,800.20 = 728,425.80/x - Step 3: Cross multiply
1,259,866.80x = 1,889,800.20 × 728,425.80 - Step 4: Simplify right side
1,259,866.80x = 1,376,579,222,525.16 - Step 5: Solve for x
x = 1,376,579,222,525.16/1,259,866.80 - Step 6: Final answer
x = 1,092,638.70
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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.