Finding the Fourth Proportional to 1,372,108.80, 2,059,329.60 and 615,115.20
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Solution
The fourth proportional to 1,372,108.80, 2,059,329.60 and 615,115.20 is: 923,195.70
Step by Step Solution
- Step 1: Write the proportion equation
1,372,108.80 : 2,059,329.60 = 615,115.20 : x - Step 2: Convert to fraction form
1,372,108.80/2,059,329.60 = 615,115.20/x - Step 3: Cross multiply
1,372,108.80x = 2,059,329.60 × 615,115.20 - Step 4: Simplify right side
1,372,108.80x = 1,266,724,938,769.92 - Step 5: Solve for x
x = 1,266,724,938,769.92/1,372,108.80 - Step 6: Final answer
x = 923,195.70
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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.