Finding the Fourth Proportional to 1,397,743.49, 1,928,867.58 and 777,542.49
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Solution
The fourth proportional to 1,397,743.49, 1,928,867.58 and 777,542.49 is: 1,072,998.38
Step by Step Solution
- Step 1: Write the proportion equation
1,397,743.49 : 1,928,867.58 = 777,542.49 : x - Step 2: Convert to fraction form
1,397,743.49/1,928,867.58 = 777,542.49/x - Step 3: Cross multiply
1,397,743.49x = 1,928,867.58 × 777,542.49 - Step 4: Simplify right side
1,397,743.49x = 1,499,776,501,033.47 - Step 5: Solve for x
x = 1,499,776,501,033.47/1,397,743.49 - Step 6: Final answer
x = 1,072,998.38
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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.