Home / 639,107.28-881,971.20-352,627.56

Finding the Fourth Proportional to 639,107.28, 881,971.20 and 352,627.56

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Solution

The fourth proportional to 639,107.28, 881,971.20 and 352,627.56 is: 486,627.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,107.28 : 881,971.20 = 352,627.56 : x
  2. Step 2: Convert to fraction form
    639,107.28/881,971.20 = 352,627.56/x
  3. Step 3: Cross multiply
    639,107.28x = 881,971.20 × 352,627.56
  4. Step 4: Simplify right side
    639,107.28x = 311,007,352,246.27
  5. Step 5: Solve for x
    x = 311,007,352,246.27/639,107.28
  6. Step 6: Final answer
    x = 486,627.77

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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.