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Finding the Fourth Proportional to 10,379,662.60, 15,570,981.90 and 3,191,800.20

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Solution

The fourth proportional to 10,379,662.60, 15,570,981.90 and 3,191,800.20 is: 4,788,157.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,379,662.60 : 15,570,981.90 = 3,191,800.20 : x
  2. Step 2: Convert to fraction form
    10,379,662.60/15,570,981.90 = 3,191,800.20/x
  3. Step 3: Cross multiply
    10,379,662.60x = 15,570,981.90 × 3,191,800.20
  4. Step 4: Simplify right side
    10,379,662.60x = 49,699,463,142,616.38
  5. Step 5: Solve for x
    x = 49,699,463,142,616.38/10,379,662.60
  6. Step 6: Final answer
    x = 4,788,157.87

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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.