Finding the Fourth Proportional to 1,428,635.97, 1,971,455.91 and 784,067.13
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Solution
The fourth proportional to 1,428,635.97, 1,971,455.91 and 784,067.13 is: 1,081,978.76
Step by Step Solution
- Step 1: Write the proportion equation
1,428,635.97 : 1,971,455.91 = 784,067.13 : x - Step 2: Convert to fraction form
1,428,635.97/1,971,455.91 = 784,067.13/x - Step 3: Cross multiply
1,428,635.97x = 1,971,455.91 × 784,067.13 - Step 4: Simplify right side
1,428,635.97x = 1,545,753,777,275.24 - Step 5: Solve for x
x = 1,545,753,777,275.24/1,428,635.97 - Step 6: Final answer
x = 1,081,978.76
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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.