Home / 419,905,383.30-629,858,074.95-389,294,381.70

Finding the Fourth Proportional to 419,905,383.30, 629,858,074.95 and 389,294,381.70

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Solution

The fourth proportional to 419,905,383.30, 629,858,074.95 and 389,294,381.70 is: 583,941,572.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,905,383.30 : 629,858,074.95 = 389,294,381.70 : x
  2. Step 2: Convert to fraction form
    419,905,383.30/629,858,074.95 = 389,294,381.70/x
  3. Step 3: Cross multiply
    419,905,383.30x = 629,858,074.95 × 389,294,381.70
  4. Step 4: Simplify right side
    419,905,383.30x = 245,200,209,846,412,512
  5. Step 5: Solve for x
    x = 245,200,209,846,412,512/419,905,383.30
  6. Step 6: Final answer
    x = 583,941,572.55

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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.