Home / 645,785.60-968,763.04-213,359.40

Finding the Fourth Proportional to 645,785.60, 968,763.04 and 213,359.40

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Solution

The fourth proportional to 645,785.60, 968,763.04 and 213,359.40 is: 320,067.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,785.60 : 968,763.04 = 213,359.40 : x
  2. Step 2: Convert to fraction form
    645,785.60/968,763.04 = 213,359.40/x
  3. Step 3: Cross multiply
    645,785.60x = 968,763.04 × 213,359.40
  4. Step 4: Simplify right side
    645,785.60x = 206,694,700,956.58
  5. Step 5: Solve for x
    x = 206,694,700,956.58/645,785.60
  6. Step 6: Final answer
    x = 320,067.06

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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.