Finding the Fourth Proportional to 1,278,926.52, 1,765,444.14 and 872,370.36
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Solution
The fourth proportional to 1,278,926.52, 1,765,444.14 and 872,370.36 is: 1,204,229.58
Step by Step Solution
- Step 1: Write the proportion equation
1,278,926.52 : 1,765,444.14 = 872,370.36 : x - Step 2: Convert to fraction form
1,278,926.52/1,765,444.14 = 872,370.36/x - Step 3: Cross multiply
1,278,926.52x = 1,765,444.14 × 872,370.36 - Step 4: Simplify right side
1,278,926.52x = 1,540,121,139,971.69 - Step 5: Solve for x
x = 1,540,121,139,971.69/1,278,926.52 - Step 6: Final answer
x = 1,204,229.58
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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.