Home / 420,780.40-630,976.20-184,001.20

Finding the Fourth Proportional to 420,780.40, 630,976.20 and 184,001.20

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Solution

The fourth proportional to 420,780.40, 630,976.20 and 184,001.20 is: 275,916.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,780.40 : 630,976.20 = 184,001.20 : x
  2. Step 2: Convert to fraction form
    420,780.40/630,976.20 = 184,001.20/x
  3. Step 3: Cross multiply
    420,780.40x = 630,976.20 × 184,001.20
  4. Step 4: Simplify right side
    420,780.40x = 116,100,377,971.44
  5. Step 5: Solve for x
    x = 116,100,377,971.44/420,780.40
  6. Step 6: Final answer
    x = 275,916.79

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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.