Home / 621,140.40-931,840.20-200,458.80

Finding the Fourth Proportional to 621,140.40, 931,840.20 and 200,458.80

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Solution

The fourth proportional to 621,140.40, 931,840.20 and 200,458.80 is: 300,730.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,140.40 : 931,840.20 = 200,458.80 : x
  2. Step 2: Convert to fraction form
    621,140.40/931,840.20 = 200,458.80/x
  3. Step 3: Cross multiply
    621,140.40x = 931,840.20 × 200,458.80
  4. Step 4: Simplify right side
    621,140.40x = 186,795,568,283.76
  5. Step 5: Solve for x
    x = 186,795,568,283.76/621,140.40
  6. Step 6: Final answer
    x = 300,730.03

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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.