Home / 638,200.20-957,429.90-217,518.60

Finding the Fourth Proportional to 638,200.20, 957,429.90 and 217,518.60

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Solution

The fourth proportional to 638,200.20, 957,429.90 and 217,518.60 is: 326,322.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,200.20 : 957,429.90 = 217,518.60 : x
  2. Step 2: Convert to fraction form
    638,200.20/957,429.90 = 217,518.60/x
  3. Step 3: Cross multiply
    638,200.20x = 957,429.90 × 217,518.60
  4. Step 4: Simplify right side
    638,200.20x = 208,258,811,446.14
  5. Step 5: Solve for x
    x = 208,258,811,446.14/638,200.20
  6. Step 6: Final answer
    x = 326,322.07

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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.