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Finding the Fourth Proportional to 546,820.20, 820,230.30 and 422,404.20

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Solution

The fourth proportional to 546,820.20, 820,230.30 and 422,404.20 is: 633,606.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,820.20 : 820,230.30 = 422,404.20 : x
  2. Step 2: Convert to fraction form
    546,820.20/820,230.30 = 422,404.20/x
  3. Step 3: Cross multiply
    546,820.20x = 820,230.30 × 422,404.20
  4. Step 4: Simplify right side
    546,820.20x = 346,468,723,687.26
  5. Step 5: Solve for x
    x = 346,468,723,687.26/546,820.20
  6. Step 6: Final answer
    x = 633,606.30

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Similar ratio
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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.