Home / 420,406,500.33-630,609,789.38-125,306,192.25

Finding the Fourth Proportional to 420,406,500.33, 630,609,789.38 and 125,306,192.25

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Solution

The fourth proportional to 420,406,500.33, 630,609,789.38 and 125,306,192.25 is: 187,959,299.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,406,500.33 : 630,609,789.38 = 125,306,192.25 : x
  2. Step 2: Convert to fraction form
    420,406,500.33/630,609,789.38 = 125,306,192.25/x
  3. Step 3: Cross multiply
    420,406,500.33x = 630,609,789.38 × 125,306,192.25
  4. Step 4: Simplify right side
    420,406,500.33x = 79,019,311,502,155,760
  5. Step 5: Solve for x
    x = 79,019,311,502,155,760/420,406,500.33
  6. Step 6: Final answer
    x = 187,959,299.96

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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.