Finding the Fourth Proportional to 1,155,203.20, 1,732,920.60 and 396,944.80
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Solution
The fourth proportional to 1,155,203.20, 1,732,920.60 and 396,944.80 is: 595,456.99
Step by Step Solution
- Step 1: Write the proportion equation
1,155,203.20 : 1,732,920.60 = 396,944.80 : x - Step 2: Convert to fraction form
1,155,203.20/1,732,920.60 = 396,944.80/x - Step 3: Cross multiply
1,155,203.20x = 1,732,920.60 × 396,944.80 - Step 4: Simplify right side
1,155,203.20x = 687,873,820,982.88 - Step 5: Solve for x
x = 687,873,820,982.88/1,155,203.20 - Step 6: Final answer
x = 595,456.99
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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.