Finding the Fourth Proportional to 3,035,390.80, 4,189,078.09 and 1,728,698.10
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Solution
The fourth proportional to 3,035,390.80, 4,189,078.09 and 1,728,698.10 is: 2,385,739.37
Step by Step Solution
- Step 1: Write the proportion equation
3,035,390.80 : 4,189,078.09 = 1,728,698.10 : x - Step 2: Convert to fraction form
3,035,390.80/4,189,078.09 = 1,728,698.10/x - Step 3: Cross multiply
3,035,390.80x = 4,189,078.09 × 1,728,698.10 - Step 4: Simplify right side
3,035,390.80x = 7,241,651,334,934.63 - Step 5: Solve for x
x = 7,241,651,334,934.63/3,035,390.80 - Step 6: Final answer
x = 2,385,739.37
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.