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Finding the Fourth Proportional to 652,358.40, 978,537.60 and 279,110.40

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Solution

The fourth proportional to 652,358.40, 978,537.60 and 279,110.40 is: 418,665.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,358.40 : 978,537.60 = 279,110.40 : x
  2. Step 2: Convert to fraction form
    652,358.40/978,537.60 = 279,110.40/x
  3. Step 3: Cross multiply
    652,358.40x = 978,537.60 × 279,110.40
  4. Step 4: Simplify right side
    652,358.40x = 273,120,020,951.04
  5. Step 5: Solve for x
    x = 273,120,020,951.04/652,358.40
  6. Step 6: Final answer
    x = 418,665.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.