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Finding the Fourth Proportional to 978,054.79, 1,466,924.73 and 267,916.87

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Solution

The fourth proportional to 978,054.79, 1,466,924.73 and 267,916.87 is: 401,832.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,054.79 : 1,466,924.73 = 267,916.87 : x
  2. Step 2: Convert to fraction form
    978,054.79/1,466,924.73 = 267,916.87/x
  3. Step 3: Cross multiply
    978,054.79x = 1,466,924.73 × 267,916.87
  4. Step 4: Simplify right side
    978,054.79x = 393,013,882,187.20
  5. Step 5: Solve for x
    x = 393,013,882,187.20/978,054.79
  6. Step 6: Final answer
    x = 401,832.17

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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.