Home / 826,467.20-1,239,134.85-420,874.30

Finding the Fourth Proportional to 826,467.20, 1,239,134.85 and 420,874.30

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Solution

The fourth proportional to 826,467.20, 1,239,134.85 and 420,874.30 is: 631,023.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,467.20 : 1,239,134.85 = 420,874.30 : x
  2. Step 2: Convert to fraction form
    826,467.20/1,239,134.85 = 420,874.30/x
  3. Step 3: Cross multiply
    826,467.20x = 1,239,134.85 × 420,874.30
  4. Step 4: Simplify right side
    826,467.20x = 521,520,009,200.09
  5. Step 5: Solve for x
    x = 521,520,009,200.09/826,467.20
  6. Step 6: Final answer
    x = 631,023.24

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Double scale
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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.