Home / 419,645,579.10-629,468,368.65-394,115,415.90

Finding the Fourth Proportional to 419,645,579.10, 629,468,368.65 and 394,115,415.90

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Solution

The fourth proportional to 419,645,579.10, 629,468,368.65 and 394,115,415.90 is: 591,173,123.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,645,579.10 : 629,468,368.65 = 394,115,415.90 : x
  2. Step 2: Convert to fraction form
    419,645,579.10/629,468,368.65 = 394,115,415.90/x
  3. Step 3: Cross multiply
    419,645,579.10x = 629,468,368.65 × 394,115,415.90
  4. Step 4: Simplify right side
    419,645,579.10x = 248,083,187,906,389,248
  5. Step 5: Solve for x
    x = 248,083,187,906,389,248/419,645,579.10
  6. Step 6: Final answer
    x = 591,173,123.85

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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.