Finding the Fourth Proportional to 1,121,208.19, 1,546,781.94 and 685,644.58
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Solution
The fourth proportional to 1,121,208.19, 1,546,781.94 and 685,644.58 is: 945,892.71
Step by Step Solution
- Step 1: Write the proportion equation
1,121,208.19 : 1,546,781.94 = 685,644.58 : x - Step 2: Convert to fraction form
1,121,208.19/1,546,781.94 = 685,644.58/x - Step 3: Cross multiply
1,121,208.19x = 1,546,781.94 × 685,644.58 - Step 4: Simplify right side
1,121,208.19x = 1,060,542,655,536.36 - Step 5: Solve for x
x = 1,060,542,655,536.36/1,121,208.19 - Step 6: Final answer
x = 945,892.71
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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.