Home / 1,313,620.20-1,970,430.30-864,847.80

Finding the Fourth Proportional to 1,313,620.20, 1,970,430.30 and 864,847.80

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Solution

The fourth proportional to 1,313,620.20, 1,970,430.30 and 864,847.80 is: 1,297,271.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,620.20 : 1,970,430.30 = 864,847.80 : x
  2. Step 2: Convert to fraction form
    1,313,620.20/1,970,430.30 = 864,847.80/x
  3. Step 3: Cross multiply
    1,313,620.20x = 1,970,430.30 × 864,847.80
  4. Step 4: Simplify right side
    1,313,620.20x = 1,704,122,310,008.34
  5. Step 5: Solve for x
    x = 1,704,122,310,008.34/1,313,620.20
  6. Step 6: Final answer
    x = 1,297,271.70

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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.