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Finding the Fourth Proportional to 978,020.20, 1,465,280.70 and 827,554.60

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Solution

The fourth proportional to 978,020.20, 1,465,280.70 and 827,554.60 is: 1,239,851.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,020.20 : 1,465,280.70 = 827,554.60 : x
  2. Step 2: Convert to fraction form
    978,020.20/1,465,280.70 = 827,554.60/x
  3. Step 3: Cross multiply
    978,020.20x = 1,465,280.70 × 827,554.60
  4. Step 4: Simplify right side
    978,020.20x = 1,212,599,783,576.22
  5. Step 5: Solve for x
    x = 1,212,599,783,576.22/978,020.20
  6. Step 6: Final answer
    x = 1,239,851.47

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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.