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Finding the Fourth Proportional to 978,254.20, 1,465,631.70 and 838,286.20

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Solution

The fourth proportional to 978,254.20, 1,465,631.70 and 838,286.20 is: 1,255,930.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,254.20 : 1,465,631.70 = 838,286.20 : x
  2. Step 2: Convert to fraction form
    978,254.20/1,465,631.70 = 838,286.20/x
  3. Step 3: Cross multiply
    978,254.20x = 1,465,631.70 × 838,286.20
  4. Step 4: Simplify right side
    978,254.20x = 1,228,618,828,392.54
  5. Step 5: Solve for x
    x = 1,228,618,828,392.54/978,254.20
  6. Step 6: Final answer
    x = 1,255,930.03

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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.