Finding the Fourth Proportional to 1,378,460.09, 1,902,323.45 and 766,638.65
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Solution
The fourth proportional to 1,378,460.09, 1,902,323.45 and 766,638.65 is: 1,057,988.33
Step by Step Solution
- Step 1: Write the proportion equation
1,378,460.09 : 1,902,323.45 = 766,638.65 : x - Step 2: Convert to fraction form
1,378,460.09/1,902,323.45 = 766,638.65/x - Step 3: Cross multiply
1,378,460.09x = 1,902,323.45 × 766,638.65 - Step 4: Simplify right side
1,378,460.09x = 1,458,394,688,243.75 - Step 5: Solve for x
x = 1,458,394,688,243.75/1,378,460.09 - Step 6: Final answer
x = 1,057,988.33
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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.