Home / 1,216,288.20-1,824,432.30-768,390.60

Finding the Fourth Proportional to 1,216,288.20, 1,824,432.30 and 768,390.60

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Solution

The fourth proportional to 1,216,288.20, 1,824,432.30 and 768,390.60 is: 1,152,585.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,288.20 : 1,824,432.30 = 768,390.60 : x
  2. Step 2: Convert to fraction form
    1,216,288.20/1,824,432.30 = 768,390.60/x
  3. Step 3: Cross multiply
    1,216,288.20x = 1,824,432.30 × 768,390.60
  4. Step 4: Simplify right side
    1,216,288.20x = 1,401,876,629,656.38
  5. Step 5: Solve for x
    x = 1,401,876,629,656.38/1,216,288.20
  6. Step 6: Final answer
    x = 1,152,585.90

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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.