Finding the Fourth Proportional to 1,378,419.75, 1,902,220.34 and 766,559.07
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Solution
The fourth proportional to 1,378,419.75, 1,902,220.34 and 766,559.07 is: 1,057,852.12
Step by Step Solution
- Step 1: Write the proportion equation
1,378,419.75 : 1,902,220.34 = 766,559.07 : x - Step 2: Convert to fraction form
1,378,419.75/1,902,220.34 = 766,559.07/x - Step 3: Cross multiply
1,378,419.75x = 1,902,220.34 × 766,559.07 - Step 4: Simplify right side
1,378,419.75x = 1,458,164,254,765.48 - Step 5: Solve for x
x = 1,458,164,254,765.48/1,378,419.75 - Step 6: Final answer
x = 1,057,852.12
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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.