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Finding the Fourth Proportional to 978,043.86, 1,466,908.34 and 267,905.93

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Solution

The fourth proportional to 978,043.86, 1,466,908.34 and 267,905.93 is: 401,815.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,043.86 : 1,466,908.34 = 267,905.93 : x
  2. Step 2: Convert to fraction form
    978,043.86/1,466,908.34 = 267,905.93/x
  3. Step 3: Cross multiply
    978,043.86x = 1,466,908.34 × 267,905.93
  4. Step 4: Simplify right side
    978,043.86x = 392,993,434,378.39
  5. Step 5: Solve for x
    x = 392,993,434,378.39/978,043.86
  6. Step 6: Final answer
    x = 401,815.76

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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.