Home / 1,520,379,146.96-2,281,431,438.36-820,861,967.60

Finding the Fourth Proportional to 1,520,379,146.96, 2,281,431,438.36 and 820,861,967.60

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Solution

The fourth proportional to 1,520,379,146.96, 2,281,431,438.36 and 820,861,967.60 is: 1,231,758,738.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520,379,146.96 : 2,281,431,438.36 = 820,861,967.60 : x
  2. Step 2: Convert to fraction form
    1,520,379,146.96/2,281,431,438.36 = 820,861,967.60/x
  3. Step 3: Cross multiply
    1,520,379,146.96x = 2,281,431,438.36 × 820,861,967.60
  4. Step 4: Simplify right side
    1,520,379,146.96x = 1,872,740,299,436,687,872
  5. Step 5: Solve for x
    x = 1,872,740,299,436,687,872/1,520,379,146.96
  6. Step 6: Final answer
    x = 1,231,758,738.06

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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.