Home / 764,912.80-1,146,980.40-449,466.40

Finding the Fourth Proportional to 764,912.80, 1,146,980.40 and 449,466.40

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Solution

The fourth proportional to 764,912.80, 1,146,980.40 and 449,466.40 is: 673,971.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,912.80 : 1,146,980.40 = 449,466.40 : x
  2. Step 2: Convert to fraction form
    764,912.80/1,146,980.40 = 449,466.40/x
  3. Step 3: Cross multiply
    764,912.80x = 1,146,980.40 × 449,466.40
  4. Step 4: Simplify right side
    764,912.80x = 515,529,151,258.56
  5. Step 5: Solve for x
    x = 515,529,151,258.56/764,912.80
  6. Step 6: Final answer
    x = 673,971.14

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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.