Finding the Fourth Proportional to 1,332,987.54, 1,839,515.10 and 721,138.38
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Solution
The fourth proportional to 1,332,987.54, 1,839,515.10 and 721,138.38 is: 995,166.80
Step by Step Solution
- Step 1: Write the proportion equation
1,332,987.54 : 1,839,515.10 = 721,138.38 : x - Step 2: Convert to fraction form
1,332,987.54/1,839,515.10 = 721,138.38/x - Step 3: Cross multiply
1,332,987.54x = 1,839,515.10 × 721,138.38 - Step 4: Simplify right side
1,332,987.54x = 1,326,544,939,199.54 - Step 5: Solve for x
x = 1,326,544,939,199.54/1,332,987.54 - Step 6: Final answer
x = 995,166.80
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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.