Home / 686,202.21-946,931.72-380,291.67

Finding the Fourth Proportional to 686,202.21, 946,931.72 and 380,291.67

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Solution

The fourth proportional to 686,202.21, 946,931.72 and 380,291.67 is: 524,787.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,202.21 : 946,931.72 = 380,291.67 : x
  2. Step 2: Convert to fraction form
    686,202.21/946,931.72 = 380,291.67/x
  3. Step 3: Cross multiply
    686,202.21x = 946,931.72 × 380,291.67
  4. Step 4: Simplify right side
    686,202.21x = 360,110,243,273.31
  5. Step 5: Solve for x
    x = 360,110,243,273.31/686,202.21
  6. Step 6: Final answer
    x = 524,787.36

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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.