Home / 420,010.20-630,015.30-262,546.20

Finding the Fourth Proportional to 420,010.20, 630,015.30 and 262,546.20

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Solution

The fourth proportional to 420,010.20, 630,015.30 and 262,546.20 is: 393,819.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,010.20 : 630,015.30 = 262,546.20 : x
  2. Step 2: Convert to fraction form
    420,010.20/630,015.30 = 262,546.20/x
  3. Step 3: Cross multiply
    420,010.20x = 630,015.30 × 262,546.20
  4. Step 4: Simplify right side
    420,010.20x = 165,408,122,956.86
  5. Step 5: Solve for x
    x = 165,408,122,956.86/420,010.20
  6. Step 6: Final answer
    x = 393,819.30

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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.