Home / 686,105.24-946,811.09-380,178.97

Finding the Fourth Proportional to 686,105.24, 946,811.09 and 380,178.97

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Solution

The fourth proportional to 686,105.24, 946,811.09 and 380,178.97 is: 524,639.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,105.24 : 946,811.09 = 380,178.97 : x
  2. Step 2: Convert to fraction form
    686,105.24/946,811.09 = 380,178.97/x
  3. Step 3: Cross multiply
    686,105.24x = 946,811.09 × 380,178.97
  4. Step 4: Simplify right side
    686,105.24x = 359,957,663,564.20
  5. Step 5: Solve for x
    x = 359,957,663,564.20/686,105.24
  6. Step 6: Final answer
    x = 524,639.14

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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.