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Finding the Fourth Proportional to 652,206.10, 978,309.15 and 278,958.10

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Solution

The fourth proportional to 652,206.10, 978,309.15 and 278,958.10 is: 418,437.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,206.10 : 978,309.15 = 278,958.10 : x
  2. Step 2: Convert to fraction form
    652,206.10/978,309.15 = 278,958.10/x
  3. Step 3: Cross multiply
    652,206.10x = 978,309.15 × 278,958.10
  4. Step 4: Simplify right side
    652,206.10x = 272,907,261,696.62
  5. Step 5: Solve for x
    x = 272,907,261,696.62/652,206.10
  6. Step 6: Final answer
    x = 418,437.15

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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.