Home / 726,289.20-1,002,401.46-420,373.80

Finding the Fourth Proportional to 726,289.20, 1,002,401.46 and 420,373.80

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Solution

The fourth proportional to 726,289.20, 1,002,401.46 and 420,373.80 is: 580,186.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,289.20 : 1,002,401.46 = 420,373.80 : x
  2. Step 2: Convert to fraction form
    726,289.20/1,002,401.46 = 420,373.80/x
  3. Step 3: Cross multiply
    726,289.20x = 1,002,401.46 × 420,373.80
  4. Step 4: Simplify right side
    726,289.20x = 421,383,310,865.75
  5. Step 5: Solve for x
    x = 421,383,310,865.75/726,289.20
  6. Step 6: Final answer
    x = 580,186.67

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Double scale
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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.