Home / 686,170.20-946,935.63-380,217.96

Finding the Fourth Proportional to 686,170.20, 946,935.63 and 380,217.96

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Solution

The fourth proportional to 686,170.20, 946,935.63 and 380,217.96 is: 524,712.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,170.20 : 946,935.63 = 380,217.96 : x
  2. Step 2: Convert to fraction form
    686,170.20/946,935.63 = 380,217.96/x
  3. Step 3: Cross multiply
    686,170.20x = 946,935.63 × 380,217.96
  4. Step 4: Simplify right side
    686,170.20x = 360,041,933,489.92
  5. Step 5: Solve for x
    x = 360,041,933,489.92/686,170.20
  6. Step 6: Final answer
    x = 524,712.28

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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.