Home / 419,905,385.10-629,858,077.65-256,646,709.90

Finding the Fourth Proportional to 419,905,385.10, 629,858,077.65 and 256,646,709.90

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Solution

The fourth proportional to 419,905,385.10, 629,858,077.65 and 256,646,709.90 is: 384,970,064.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,905,385.10 : 629,858,077.65 = 256,646,709.90 : x
  2. Step 2: Convert to fraction form
    419,905,385.10/629,858,077.65 = 256,646,709.90/x
  3. Step 3: Cross multiply
    419,905,385.10x = 629,858,077.65 × 256,646,709.90
  4. Step 4: Simplify right side
    419,905,385.10x = 161,651,003,332,811,232
  5. Step 5: Solve for x
    x = 161,651,003,332,811,232/419,905,385.10
  6. Step 6: Final answer
    x = 384,970,064.85

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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.