Home / 764,705.98-1,055,270.10-420,540.85

Finding the Fourth Proportional to 764,705.98, 1,055,270.10 and 420,540.85

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Solution

The fourth proportional to 764,705.98, 1,055,270.10 and 420,540.85 is: 580,333.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,705.98 : 1,055,270.10 = 420,540.85 : x
  2. Step 2: Convert to fraction form
    764,705.98/1,055,270.10 = 420,540.85/x
  3. Step 3: Cross multiply
    764,705.98x = 1,055,270.10 × 420,540.85
  4. Step 4: Simplify right side
    764,705.98x = 443,784,184,833.59
  5. Step 5: Solve for x
    x = 443,784,184,833.59/764,705.98
  6. Step 6: Final answer
    x = 580,333.09

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Double scale
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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.