Home / 480,709.20-720,869.40-165,003.60

Finding the Fourth Proportional to 480,709.20, 720,869.40 and 165,003.60

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Solution

The fourth proportional to 480,709.20, 720,869.40 and 165,003.60 is: 247,438.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,709.20 : 720,869.40 = 165,003.60 : x
  2. Step 2: Convert to fraction form
    480,709.20/720,869.40 = 165,003.60/x
  3. Step 3: Cross multiply
    480,709.20x = 720,869.40 × 165,003.60
  4. Step 4: Simplify right side
    480,709.20x = 118,946,046,129.84
  5. Step 5: Solve for x
    x = 118,946,046,129.84/480,709.20
  6. Step 6: Final answer
    x = 247,438.67

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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.