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Finding the Fourth Proportional to 20,406,415.65, 30,609,623.48 and 20,406,415.65

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Solution

The fourth proportional to 20,406,415.65, 30,609,623.48 and 20,406,415.65 is: 30,609,623.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406,415.65 : 30,609,623.48 = 20,406,415.65 : x
  2. Step 2: Convert to fraction form
    20,406,415.65/30,609,623.48 = 20,406,415.65/x
  3. Step 3: Cross multiply
    20,406,415.65x = 30,609,623.48 × 20,406,415.65
  4. Step 4: Simplify right side
    20,406,415.65x = 624,632,699,520,847.38
  5. Step 5: Solve for x
    x = 624,632,699,520,847.38/20,406,415.65
  6. Step 6: Final answer
    x = 30,609,623.48

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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.