Home / 1,207,935.40-1,811,896.38-309,375.40

Finding the Fourth Proportional to 1,207,935.40, 1,811,896.38 and 309,375.40

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Solution

The fourth proportional to 1,207,935.40, 1,811,896.38 and 309,375.40 is: 464,061.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,935.40 : 1,811,896.38 = 309,375.40 : x
  2. Step 2: Convert to fraction form
    1,207,935.40/1,811,896.38 = 309,375.40/x
  3. Step 3: Cross multiply
    1,207,935.40x = 1,811,896.38 × 309,375.40
  4. Step 4: Simplify right side
    1,207,935.40x = 560,556,167,321.05
  5. Step 5: Solve for x
    x = 560,556,167,321.05/1,207,935.40
  6. Step 6: Final answer
    x = 464,061.38

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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.