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Finding the Fourth Proportional to 978,017.20, 1,465,276.20 and 827,551.60

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Solution

The fourth proportional to 978,017.20, 1,465,276.20 and 827,551.60 is: 1,239,846.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,017.20 : 1,465,276.20 = 827,551.60 : x
  2. Step 2: Convert to fraction form
    978,017.20/1,465,276.20 = 827,551.60/x
  3. Step 3: Cross multiply
    978,017.20x = 1,465,276.20 × 827,551.60
  4. Step 4: Simplify right side
    978,017.20x = 1,212,591,663,751.92
  5. Step 5: Solve for x
    x = 1,212,591,663,751.92/978,017.20
  6. Step 6: Final answer
    x = 1,239,846.97

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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.