Home / 814,861.20-1,222,291.80-780,306.60

Finding the Fourth Proportional to 814,861.20, 1,222,291.80 and 780,306.60

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Solution

The fourth proportional to 814,861.20, 1,222,291.80 and 780,306.60 is: 1,170,459.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,861.20 : 1,222,291.80 = 780,306.60 : x
  2. Step 2: Convert to fraction form
    814,861.20/1,222,291.80 = 780,306.60/x
  3. Step 3: Cross multiply
    814,861.20x = 1,222,291.80 × 780,306.60
  4. Step 4: Simplify right side
    814,861.20x = 953,762,358,665.88
  5. Step 5: Solve for x
    x = 953,762,358,665.88/814,861.20
  6. Step 6: Final answer
    x = 1,170,459.90

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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.