Home / 684,867.69-945,099.23-378,936.09

Finding the Fourth Proportional to 684,867.69, 945,099.23 and 378,936.09

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Solution

The fourth proportional to 684,867.69, 945,099.23 and 378,936.09 is: 522,921.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,867.69 : 945,099.23 = 378,936.09 : x
  2. Step 2: Convert to fraction form
    684,867.69/945,099.23 = 378,936.09/x
  3. Step 3: Cross multiply
    684,867.69x = 945,099.23 × 378,936.09
  4. Step 4: Simplify right side
    684,867.69x = 358,132,204,983.53
  5. Step 5: Solve for x
    x = 358,132,204,983.53/684,867.69
  6. Step 6: Final answer
    x = 522,921.74

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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.