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Finding the Fourth Proportional to 618,282.54, 853,354.26 and 422,571.60

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Solution

The fourth proportional to 618,282.54, 853,354.26 and 422,571.60 is: 583,233.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,282.54 : 853,354.26 = 422,571.60 : x
  2. Step 2: Convert to fraction form
    618,282.54/853,354.26 = 422,571.60/x
  3. Step 3: Cross multiply
    618,282.54x = 853,354.26 × 422,571.60
  4. Step 4: Simplify right side
    618,282.54x = 360,603,275,015.02
  5. Step 5: Solve for x
    x = 360,603,275,015.02/618,282.54
  6. Step 6: Final answer
    x = 583,233.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.