Finding the Fourth Proportional to 1,815,127.80, 2,722,691.70 and 485,431.80
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Solution
The fourth proportional to 1,815,127.80, 2,722,691.70 and 485,431.80 is: 728,147.70
Step by Step Solution
- Step 1: Write the proportion equation
1,815,127.80 : 2,722,691.70 = 485,431.80 : x - Step 2: Convert to fraction form
1,815,127.80/2,722,691.70 = 485,431.80/x - Step 3: Cross multiply
1,815,127.80x = 2,722,691.70 × 485,431.80 - Step 4: Simplify right side
1,815,127.80x = 1,321,681,132,776.06 - Step 5: Solve for x
x = 1,321,681,132,776.06/1,815,127.80 - Step 6: Final answer
x = 728,147.70
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1.5x scale
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.