Home / 419,410,924.03-629,015,459.64-128,280,560.41

Finding the Fourth Proportional to 419,410,924.03, 629,015,459.64 and 128,280,560.41

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Solution

The fourth proportional to 419,410,924.03, 629,015,459.64 and 128,280,560.41 is: 192,389,971.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,410,924.03 : 629,015,459.64 = 128,280,560.41 : x
  2. Step 2: Convert to fraction form
    419,410,924.03/629,015,459.64 = 128,280,560.41/x
  3. Step 3: Cross multiply
    419,410,924.03x = 629,015,459.64 × 128,280,560.41
  4. Step 4: Simplify right side
    419,410,924.03x = 80,690,455,669,172,928
  5. Step 5: Solve for x
    x = 80,690,455,669,172,928/419,410,924.03
  6. Step 6: Final answer
    x = 192,389,971.38

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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.