Home / 420,514.05-630,867.67-120,997.11

Finding the Fourth Proportional to 420,514.05, 630,867.67 and 120,997.11

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Solution

The fourth proportional to 420,514.05, 630,867.67 and 120,997.11 is: 181,523.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,514.05 : 630,867.67 = 120,997.11 : x
  2. Step 2: Convert to fraction form
    420,514.05/630,867.67 = 120,997.11/x
  3. Step 3: Cross multiply
    420,514.05x = 630,867.67 × 120,997.11
  4. Step 4: Simplify right side
    420,514.05x = 76,333,164,559.94
  5. Step 5: Solve for x
    x = 76,333,164,559.94/420,514.05
  6. Step 6: Final answer
    x = 181,523.46

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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.