Home / 724,807.20-1,086,692.40-325,120.80

Finding the Fourth Proportional to 724,807.20, 1,086,692.40 and 325,120.80

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Solution

The fourth proportional to 724,807.20, 1,086,692.40 and 325,120.80 is: 487,448.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,807.20 : 1,086,692.40 = 325,120.80 : x
  2. Step 2: Convert to fraction form
    724,807.20/1,086,692.40 = 325,120.80/x
  3. Step 3: Cross multiply
    724,807.20x = 1,086,692.40 × 325,120.80
  4. Step 4: Simplify right side
    724,807.20x = 353,306,302,441.92
  5. Step 5: Solve for x
    x = 353,306,302,441.92/724,807.20
  6. Step 6: Final answer
    x = 487,448.67

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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.