Home / 1,328,590.20-1,992,885.30-487,032.60

Finding the Fourth Proportional to 1,328,590.20, 1,992,885.30 and 487,032.60

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Solution

The fourth proportional to 1,328,590.20, 1,992,885.30 and 487,032.60 is: 730,548.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,590.20 : 1,992,885.30 = 487,032.60 : x
  2. Step 2: Convert to fraction form
    1,328,590.20/1,992,885.30 = 487,032.60/x
  3. Step 3: Cross multiply
    1,328,590.20x = 1,992,885.30 × 487,032.60
  4. Step 4: Simplify right side
    1,328,590.20x = 970,600,109,160.78
  5. Step 5: Solve for x
    x = 970,600,109,160.78/1,328,590.20
  6. Step 6: Final answer
    x = 730,548.90

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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.