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Finding the Fourth Proportional to 2,561,721.90, 3,842,582.85 and 788,793.90

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Solution

The fourth proportional to 2,561,721.90, 3,842,582.85 and 788,793.90 is: 1,183,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,561,721.90 : 3,842,582.85 = 788,793.90 : x
  2. Step 2: Convert to fraction form
    2,561,721.90/3,842,582.85 = 788,793.90/x
  3. Step 3: Cross multiply
    2,561,721.90x = 3,842,582.85 × 788,793.90
  4. Step 4: Simplify right side
    2,561,721.90x = 3,031,005,912,324.62
  5. Step 5: Solve for x
    x = 3,031,005,912,324.62/2,561,721.90
  6. Step 6: Final answer
    x = 1,183,190.85

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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.