Home / 781,739.20-1,172,810.97-457,800.88

Finding the Fourth Proportional to 781,739.20, 1,172,810.97 and 457,800.88

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Solution

The fourth proportional to 781,739.20, 1,172,810.97 and 457,800.88 is: 686,819.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,739.20 : 1,172,810.97 = 457,800.88 : x
  2. Step 2: Convert to fraction form
    781,739.20/1,172,810.97 = 457,800.88/x
  3. Step 3: Cross multiply
    781,739.20x = 1,172,810.97 × 457,800.88
  4. Step 4: Simplify right side
    781,739.20x = 536,913,893,406.65
  5. Step 5: Solve for x
    x = 536,913,893,406.65/781,739.20
  6. Step 6: Final answer
    x = 686,819.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.