Home / 419,976,007.60-629,964,011.40-258,508,922.80

Finding the Fourth Proportional to 419,976,007.60, 629,964,011.40 and 258,508,922.80

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Solution

The fourth proportional to 419,976,007.60, 629,964,011.40 and 258,508,922.80 is: 387,763,384.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,976,007.60 : 629,964,011.40 = 258,508,922.80 : x
  2. Step 2: Convert to fraction form
    419,976,007.60/629,964,011.40 = 258,508,922.80/x
  3. Step 3: Cross multiply
    419,976,007.60x = 629,964,011.40 × 258,508,922.80
  4. Step 4: Simplify right side
    419,976,007.60x = 162,851,317,989,780,928
  5. Step 5: Solve for x
    x = 162,851,317,989,780,928/419,976,007.60
  6. Step 6: Final answer
    x = 387,763,384.20

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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.