Home / 686,122.14-946,834.41-380,195.84

Finding the Fourth Proportional to 686,122.14, 946,834.41 and 380,195.84

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Solution

The fourth proportional to 686,122.14, 946,834.41 and 380,195.84 is: 524,662.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,122.14 : 946,834.41 = 380,195.84 : x
  2. Step 2: Convert to fraction form
    686,122.14/946,834.41 = 380,195.84/x
  3. Step 3: Cross multiply
    686,122.14x = 946,834.41 × 380,195.84
  4. Step 4: Simplify right side
    686,122.14x = 359,982,507,643.68
  5. Step 5: Solve for x
    x = 359,982,507,643.68/686,122.14
  6. Step 6: Final answer
    x = 524,662.42

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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.