Home / 646,664.92-969,399.46-330,424.72

Finding the Fourth Proportional to 646,664.92, 969,399.46 and 330,424.72

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Solution

The fourth proportional to 646,664.92, 969,399.46 and 330,424.72 is: 495,331.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,664.92 : 969,399.46 = 330,424.72 : x
  2. Step 2: Convert to fraction form
    646,664.92/969,399.46 = 330,424.72/x
  3. Step 3: Cross multiply
    646,664.92x = 969,399.46 × 330,424.72
  4. Step 4: Simplify right side
    646,664.92x = 320,313,545,138.65
  5. Step 5: Solve for x
    x = 320,313,545,138.65/646,664.92
  6. Step 6: Final answer
    x = 495,331.56

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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.