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Finding the Fourth Proportional to 978,028.10, 1,466,884.74 and 267,890.06

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Solution

The fourth proportional to 978,028.10, 1,466,884.74 and 267,890.06 is: 401,791.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,028.10 : 1,466,884.74 = 267,890.06 : x
  2. Step 2: Convert to fraction form
    978,028.10/1,466,884.74 = 267,890.06/x
  3. Step 3: Cross multiply
    978,028.10x = 1,466,884.74 × 267,890.06
  4. Step 4: Simplify right side
    978,028.10x = 392,963,841,011.68
  5. Step 5: Solve for x
    x = 392,963,841,011.68/978,028.10
  6. Step 6: Final answer
    x = 401,791.97

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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.