Finding the Fourth Proportional to 811,964.13, 1,215,519.60 and 491,145.09
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Solution
The fourth proportional to 811,964.13, 1,215,519.60 and 491,145.09 is: 735,249.82
Step by Step Solution
- Step 1: Write the proportion equation
811,964.13 : 1,215,519.60 = 491,145.09 : x - Step 2: Convert to fraction form
811,964.13/1,215,519.60 = 491,145.09/x - Step 3: Cross multiply
811,964.13x = 1,215,519.60 × 491,145.09 - Step 4: Simplify right side
811,964.13x = 596,996,483,338.76 - Step 5: Solve for x
x = 596,996,483,338.76/811,964.13 - Step 6: Final answer
x = 735,249.82
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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.