Home / 686,983.28-947,857.56-396,523.76

Finding the Fourth Proportional to 686,983.28, 947,857.56 and 396,523.76

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Solution

The fourth proportional to 686,983.28, 947,857.56 and 396,523.76 is: 547,099.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,983.28 : 947,857.56 = 396,523.76 : x
  2. Step 2: Convert to fraction form
    686,983.28/947,857.56 = 396,523.76/x
  3. Step 3: Cross multiply
    686,983.28x = 947,857.56 × 396,523.76
  4. Step 4: Simplify right side
    686,983.28x = 375,848,043,635.63
  5. Step 5: Solve for x
    x = 375,848,043,635.63/686,983.28
  6. Step 6: Final answer
    x = 547,099.26

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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.