Home / 1,328,648.20-1,992,972.30-487,090.60

Finding the Fourth Proportional to 1,328,648.20, 1,992,972.30 and 487,090.60

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Solution

The fourth proportional to 1,328,648.20, 1,992,972.30 and 487,090.60 is: 730,635.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,648.20 : 1,992,972.30 = 487,090.60 : x
  2. Step 2: Convert to fraction form
    1,328,648.20/1,992,972.30 = 487,090.60/x
  3. Step 3: Cross multiply
    1,328,648.20x = 1,992,972.30 × 487,090.60
  4. Step 4: Simplify right side
    1,328,648.20x = 970,758,073,390.38
  5. Step 5: Solve for x
    x = 970,758,073,390.38/1,328,648.20
  6. Step 6: Final answer
    x = 730,635.90

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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.