Home / 630,448.11-945,102.33-428,111.73

Finding the Fourth Proportional to 630,448.11, 945,102.33 and 428,111.73

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Solution

The fourth proportional to 630,448.11, 945,102.33 and 428,111.73 is: 641,780.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,448.11 : 945,102.33 = 428,111.73 : x
  2. Step 2: Convert to fraction form
    630,448.11/945,102.33 = 428,111.73/x
  3. Step 3: Cross multiply
    630,448.11x = 945,102.33 × 428,111.73
  4. Step 4: Simplify right side
    630,448.11x = 404,609,393,523.33
  5. Step 5: Solve for x
    x = 404,609,393,523.33/630,448.11
  6. Step 6: Final answer
    x = 641,780.64

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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.