Home / 638,467.20-957,830.40-217,785.60

Finding the Fourth Proportional to 638,467.20, 957,830.40 and 217,785.60

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Solution

The fourth proportional to 638,467.20, 957,830.40 and 217,785.60 is: 326,722.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,467.20 : 957,830.40 = 217,785.60 : x
  2. Step 2: Convert to fraction form
    638,467.20/957,830.40 = 217,785.60/x
  3. Step 3: Cross multiply
    638,467.20x = 957,830.40 × 217,785.60
  4. Step 4: Simplify right side
    638,467.20x = 208,601,668,362.24
  5. Step 5: Solve for x
    x = 208,601,668,362.24/638,467.20
  6. Step 6: Final answer
    x = 326,722.61

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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.