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Finding the Fourth Proportional to 547,344.40, 821,016.60 and 396,878.80

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Solution

The fourth proportional to 547,344.40, 821,016.60 and 396,878.80 is: 595,318.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,344.40 : 821,016.60 = 396,878.80 : x
  2. Step 2: Convert to fraction form
    547,344.40/821,016.60 = 396,878.80/x
  3. Step 3: Cross multiply
    547,344.40x = 821,016.60 × 396,878.80
  4. Step 4: Simplify right side
    547,344.40x = 325,844,082,988.08
  5. Step 5: Solve for x
    x = 325,844,082,988.08/547,344.40
  6. Step 6: Final answer
    x = 595,318.20

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1.5x scale

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.