Finding the Fourth Proportional to 1,042,486.20, 1,563,729.30 and 1,026,739.80
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Solution
The fourth proportional to 1,042,486.20, 1,563,729.30 and 1,026,739.80 is: 1,540,109.70
Step by Step Solution
- Step 1: Write the proportion equation
1,042,486.20 : 1,563,729.30 = 1,026,739.80 : x - Step 2: Convert to fraction form
1,042,486.20/1,563,729.30 = 1,026,739.80/x - Step 3: Cross multiply
1,042,486.20x = 1,563,729.30 × 1,026,739.80 - Step 4: Simplify right side
1,042,486.20x = 1,605,543,108,736.14 - Step 5: Solve for x
x = 1,605,543,108,736.14/1,042,486.20 - Step 6: Final answer
x = 1,540,109.70
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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.