Home / 419,906,010.30-629,859,015.45-389,295,008.70

Finding the Fourth Proportional to 419,906,010.30, 629,859,015.45 and 389,295,008.70

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Solution

The fourth proportional to 419,906,010.30, 629,859,015.45 and 389,295,008.70 is: 583,942,513.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,906,010.30 : 629,859,015.45 = 389,295,008.70 : x
  2. Step 2: Convert to fraction form
    419,906,010.30/629,859,015.45 = 389,295,008.70/x
  3. Step 3: Cross multiply
    419,906,010.30x = 629,859,015.45 × 389,295,008.70
  4. Step 4: Simplify right side
    419,906,010.30x = 245,200,970,899,381,184
  5. Step 5: Solve for x
    x = 245,200,970,899,381,184/419,906,010.30
  6. Step 6: Final answer
    x = 583,942,513.05

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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.