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Finding the Fourth Proportional to 978,012.20, 1,465,268.70 and 827,546.60

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Solution

The fourth proportional to 978,012.20, 1,465,268.70 and 827,546.60 is: 1,239,839.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,012.20 : 1,465,268.70 = 827,546.60 : x
  2. Step 2: Convert to fraction form
    978,012.20/1,465,268.70 = 827,546.60/x
  3. Step 3: Cross multiply
    978,012.20x = 1,465,268.70 × 827,546.60
  4. Step 4: Simplify right side
    978,012.20x = 1,212,578,130,771.42
  5. Step 5: Solve for x
    x = 1,212,578,130,771.42/978,012.20
  6. Step 6: Final answer
    x = 1,239,839.47

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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.