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Finding the Fourth Proportional to 978,046.11, 1,466,911.71 and 267,908.18

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Solution

The fourth proportional to 978,046.11, 1,466,911.71 and 267,908.18 is: 401,819.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,046.11 : 1,466,911.71 = 267,908.18 : x
  2. Step 2: Convert to fraction form
    978,046.11/1,466,911.71 = 267,908.18/x
  3. Step 3: Cross multiply
    978,046.11x = 1,466,911.71 × 267,908.18
  4. Step 4: Simplify right side
    978,046.11x = 392,997,639,112.23
  5. Step 5: Solve for x
    x = 392,997,639,112.23/978,046.11
  6. Step 6: Final answer
    x = 401,819.13

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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.