Home / 939,865.20-1,409,797.80-621,000.60

Finding the Fourth Proportional to 939,865.20, 1,409,797.80 and 621,000.60

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Solution

The fourth proportional to 939,865.20, 1,409,797.80 and 621,000.60 is: 931,500.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,865.20 : 1,409,797.80 = 621,000.60 : x
  2. Step 2: Convert to fraction form
    939,865.20/1,409,797.80 = 621,000.60/x
  3. Step 3: Cross multiply
    939,865.20x = 1,409,797.80 × 621,000.60
  4. Step 4: Simplify right side
    939,865.20x = 875,485,279,678.68
  5. Step 5: Solve for x
    x = 875,485,279,678.68/939,865.20
  6. Step 6: Final answer
    x = 931,500.90

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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.