Finding the Fourth Proportional to 3,780,393.80, 5,671,109.10 and 1,255,785.80
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Solution
The fourth proportional to 3,780,393.80, 5,671,109.10 and 1,255,785.80 is: 1,883,850.90
Step by Step Solution
- Step 1: Write the proportion equation
3,780,393.80 : 5,671,109.10 = 1,255,785.80 : x - Step 2: Convert to fraction form
3,780,393.80/5,671,109.10 = 1,255,785.80/x - Step 3: Cross multiply
3,780,393.80x = 5,671,109.10 × 1,255,785.80 - Step 4: Simplify right side
3,780,393.80x = 7,121,698,278,030.78 - Step 5: Solve for x
x = 7,121,698,278,030.78/3,780,393.80 - Step 6: Final answer
x = 1,883,850.90
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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.