Finding the Fourth Proportional to 1,399,786.22, 2,102,208.70 and 1,287,258.86
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Solution
The fourth proportional to 1,399,786.22, 2,102,208.70 and 1,287,258.86 is: 1,933,214.33
Step by Step Solution
- Step 1: Write the proportion equation
1,399,786.22 : 2,102,208.70 = 1,287,258.86 : x - Step 2: Convert to fraction form
1,399,786.22/2,102,208.70 = 1,287,258.86/x - Step 3: Cross multiply
1,399,786.22x = 2,102,208.70 × 1,287,258.86 - Step 4: Simplify right side
1,399,786.22x = 2,706,086,774,644.08 - Step 5: Solve for x
x = 2,706,086,774,644.08/1,399,786.22 - Step 6: Final answer
x = 1,933,214.33
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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.