Home / 1,230,912.40-1,844,986.20-520,819.60

Finding the Fourth Proportional to 1,230,912.40, 1,844,986.20 and 520,819.60

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Solution

The fourth proportional to 1,230,912.40, 1,844,986.20 and 520,819.60 is: 780,644.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,912.40 : 1,844,986.20 = 520,819.60 : x
  2. Step 2: Convert to fraction form
    1,230,912.40/1,844,986.20 = 520,819.60/x
  3. Step 3: Cross multiply
    1,230,912.40x = 1,844,986.20 × 520,819.60
  4. Step 4: Simplify right side
    1,230,912.40x = 960,904,974,689.52
  5. Step 5: Solve for x
    x = 960,904,974,689.52/1,230,912.40
  6. Step 6: Final answer
    x = 780,644.48

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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.