Home / 869,750.20-1,200,263.97-487,768.78

Finding the Fourth Proportional to 869,750.20, 1,200,263.97 and 487,768.78

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Solution

The fourth proportional to 869,750.20, 1,200,263.97 and 487,768.78 is: 673,125.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,750.20 : 1,200,263.97 = 487,768.78 : x
  2. Step 2: Convert to fraction form
    869,750.20/1,200,263.97 = 487,768.78/x
  3. Step 3: Cross multiply
    869,750.20x = 1,200,263.97 × 487,768.78
  4. Step 4: Simplify right side
    869,750.20x = 585,451,292,324.86
  5. Step 5: Solve for x
    x = 585,451,292,324.86/869,750.20
  6. Step 6: Final answer
    x = 673,125.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.