Home / 419,976,021.60-629,964,032.40-258,508,936.80

Finding the Fourth Proportional to 419,976,021.60, 629,964,032.40 and 258,508,936.80

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Solution

The fourth proportional to 419,976,021.60, 629,964,032.40 and 258,508,936.80 is: 387,763,405.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,976,021.60 : 629,964,032.40 = 258,508,936.80 : x
  2. Step 2: Convert to fraction form
    419,976,021.60/629,964,032.40 = 258,508,936.80/x
  3. Step 3: Cross multiply
    419,976,021.60x = 629,964,032.40 × 258,508,936.80
  4. Step 4: Simplify right side
    419,976,021.60x = 162,851,332,237,964,768
  5. Step 5: Solve for x
    x = 162,851,332,237,964,768/419,976,021.60
  6. Step 6: Final answer
    x = 387,763,405.20

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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.