Home / 860,864.20-1,290,713.10-439,793.80

Finding the Fourth Proportional to 860,864.20, 1,290,713.10 and 439,793.80

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Solution

The fourth proportional to 860,864.20, 1,290,713.10 and 439,793.80 is: 659,392.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,864.20 : 1,290,713.10 = 439,793.80 : x
  2. Step 2: Convert to fraction form
    860,864.20/1,290,713.10 = 439,793.80/x
  3. Step 3: Cross multiply
    860,864.20x = 1,290,713.10 × 439,793.80
  4. Step 4: Simplify right side
    860,864.20x = 567,647,618,958.78
  5. Step 5: Solve for x
    x = 567,647,618,958.78/860,864.20
  6. Step 6: Final answer
    x = 659,392.76

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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.