Home / 630,845.72-945,299.44-428,178.26

Finding the Fourth Proportional to 630,845.72, 945,299.44 and 428,178.26

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Solution

The fourth proportional to 630,845.72, 945,299.44 and 428,178.26 is: 641,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,845.72 : 945,299.44 = 428,178.26 : x
  2. Step 2: Convert to fraction form
    630,845.72/945,299.44 = 428,178.26/x
  3. Step 3: Cross multiply
    630,845.72x = 945,299.44 × 428,178.26
  4. Step 4: Simplify right side
    630,845.72x = 404,756,669,398.17
  5. Step 5: Solve for x
    x = 404,756,669,398.17/630,845.72
  6. Step 6: Final answer
    x = 641,609.60

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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.