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Finding the Fourth Proportional to 534,005.20, 800,035.80 and 422,419.60

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Solution

The fourth proportional to 534,005.20, 800,035.80 and 422,419.60 is: 632,860.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,005.20 : 800,035.80 = 422,419.60 : x
  2. Step 2: Convert to fraction form
    534,005.20/800,035.80 = 422,419.60/x
  3. Step 3: Cross multiply
    534,005.20x = 800,035.80 × 422,419.60
  4. Step 4: Simplify right side
    534,005.20x = 337,950,802,621.68
  5. Step 5: Solve for x
    x = 337,950,802,621.68/534,005.20
  6. Step 6: Final answer
    x = 632,860.51

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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.