Home / 630,848.72-945,303.94-428,181.26

Finding the Fourth Proportional to 630,848.72, 945,303.94 and 428,181.26

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Solution

The fourth proportional to 630,848.72, 945,303.94 and 428,181.26 is: 641,614.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,848.72 : 945,303.94 = 428,181.26 : x
  2. Step 2: Convert to fraction form
    630,848.72/945,303.94 = 428,181.26/x
  3. Step 3: Cross multiply
    630,848.72x = 945,303.94 × 428,181.26
  4. Step 4: Simplify right side
    630,848.72x = 404,761,432,112.16
  5. Step 5: Solve for x
    x = 404,761,432,112.16/630,848.72
  6. Step 6: Final answer
    x = 641,614.10

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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.