Home / 742,289.40-1,113,861.78-443,496.60

Finding the Fourth Proportional to 742,289.40, 1,113,861.78 and 443,496.60

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Solution

The fourth proportional to 742,289.40, 1,113,861.78 and 443,496.60 is: 665,500.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,289.40 : 1,113,861.78 = 443,496.60 : x
  2. Step 2: Convert to fraction form
    742,289.40/1,113,861.78 = 443,496.60/x
  3. Step 3: Cross multiply
    742,289.40x = 1,113,861.78 × 443,496.60
  4. Step 4: Simplify right side
    742,289.40x = 493,993,912,299.95
  5. Step 5: Solve for x
    x = 493,993,912,299.95/742,289.40
  6. Step 6: Final answer
    x = 665,500.43

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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.