Finding the Fourth Proportional to 811,425.36, 1,217,837.88 and 313,139.28
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Solution
The fourth proportional to 811,425.36, 1,217,837.88 and 313,139.28 is: 469,979.00
Step by Step Solution
- Step 1: Write the proportion equation
811,425.36 : 1,217,837.88 = 313,139.28 : x - Step 2: Convert to fraction form
811,425.36/1,217,837.88 = 313,139.28/x - Step 3: Cross multiply
811,425.36x = 1,217,837.88 × 313,139.28 - Step 4: Simplify right side
811,425.36x = 381,352,876,899.93 - Step 5: Solve for x
x = 381,352,876,899.93/811,425.36 - Step 6: Final answer
x = 469,979.00
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.