Home / 724,380.20-1,086,564.90-218,940.20

Finding the Fourth Proportional to 724,380.20, 1,086,564.90 and 218,940.20

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Solution

The fourth proportional to 724,380.20, 1,086,564.90 and 218,940.20 is: 328,408.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,380.20 : 1,086,564.90 = 218,940.20 : x
  2. Step 2: Convert to fraction form
    724,380.20/1,086,564.90 = 218,940.20/x
  3. Step 3: Cross multiply
    724,380.20x = 1,086,564.90 × 218,940.20
  4. Step 4: Simplify right side
    724,380.20x = 237,892,736,518.98
  5. Step 5: Solve for x
    x = 237,892,736,518.98/724,380.20
  6. Step 6: Final answer
    x = 328,408.67

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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.