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Finding the Fourth Proportional to 978,036.57, 1,466,897.49 and 267,898.59

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Solution

The fourth proportional to 978,036.57, 1,466,897.49 and 267,898.59 is: 401,804.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,036.57 : 1,466,897.49 = 267,898.59 : x
  2. Step 2: Convert to fraction form
    978,036.57/1,466,897.49 = 267,898.59/x
  3. Step 3: Cross multiply
    978,036.57x = 1,466,897.49 × 267,898.59
  4. Step 4: Simplify right side
    978,036.57x = 392,979,769,245.54
  5. Step 5: Solve for x
    x = 392,979,769,245.54/978,036.57
  6. Step 6: Final answer
    x = 401,804.78

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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.