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Finding the Fourth Proportional to 978,435.36, 1,465,579.44 and 739,141.92

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Solution

The fourth proportional to 978,435.36, 1,465,579.44 and 739,141.92 is: 1,107,146.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,435.36 : 1,465,579.44 = 739,141.92 : x
  2. Step 2: Convert to fraction form
    978,435.36/1,465,579.44 = 739,141.92/x
  3. Step 3: Cross multiply
    978,435.36x = 1,465,579.44 × 739,141.92
  4. Step 4: Simplify right side
    978,435.36x = 1,083,271,201,194.12
  5. Step 5: Solve for x
    x = 1,083,271,201,194.12/978,435.36
  6. Step 6: Final answer
    x = 1,107,146.42

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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.