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Finding the Fourth Proportional to 886,920.80, 1,330,251.60 and 255,768.80

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Solution

The fourth proportional to 886,920.80, 1,330,251.60 and 255,768.80 is: 383,615.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,920.80 : 1,330,251.60 = 255,768.80 : x
  2. Step 2: Convert to fraction form
    886,920.80/1,330,251.60 = 255,768.80/x
  3. Step 3: Cross multiply
    886,920.80x = 1,330,251.60 × 255,768.80
  4. Step 4: Simplify right side
    886,920.80x = 340,236,855,430.08
  5. Step 5: Solve for x
    x = 340,236,855,430.08/886,920.80
  6. Step 6: Final answer
    x = 383,615.83

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1.5x scale

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.