Home / 820,899.60-1,231,349.40-764,912.40

Finding the Fourth Proportional to 820,899.60, 1,231,349.40 and 764,912.40

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Solution

The fourth proportional to 820,899.60, 1,231,349.40 and 764,912.40 is: 1,147,368.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,899.60 : 1,231,349.40 = 764,912.40 : x
  2. Step 2: Convert to fraction form
    820,899.60/1,231,349.40 = 764,912.40/x
  3. Step 3: Cross multiply
    820,899.60x = 1,231,349.40 × 764,912.40
  4. Step 4: Simplify right side
    820,899.60x = 941,874,424,792.56
  5. Step 5: Solve for x
    x = 941,874,424,792.56/820,899.60
  6. Step 6: Final answer
    x = 1,147,368.60

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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.