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Finding the Fourth Proportional to 978,559.20, 1,466,089.20 and 828,093.60

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Solution

The fourth proportional to 978,559.20, 1,466,089.20 and 828,093.60 is: 1,240,659.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,559.20 : 1,466,089.20 = 828,093.60 : x
  2. Step 2: Convert to fraction form
    978,559.20/1,466,089.20 = 828,093.60/x
  3. Step 3: Cross multiply
    978,559.20x = 1,466,089.20 × 828,093.60
  4. Step 4: Simplify right side
    978,559.20x = 1,214,059,083,549.12
  5. Step 5: Solve for x
    x = 1,214,059,083,549.12/978,559.20
  6. Step 6: Final answer
    x = 1,240,659.82

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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.