Home / 745,639.14-1,028,993.96-406,107.38

Finding the Fourth Proportional to 745,639.14, 1,028,993.96 and 406,107.38

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Solution

The fourth proportional to 745,639.14, 1,028,993.96 and 406,107.38 is: 560,434.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,639.14 : 1,028,993.96 = 406,107.38 : x
  2. Step 2: Convert to fraction form
    745,639.14/1,028,993.96 = 406,107.38/x
  3. Step 3: Cross multiply
    745,639.14x = 1,028,993.96 × 406,107.38
  4. Step 4: Simplify right side
    745,639.14x = 417,882,041,131.43
  5. Step 5: Solve for x
    x = 417,882,041,131.43/745,639.14
  6. Step 6: Final answer
    x = 560,434.69

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Double scale
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1.5x scale

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.