Home / 419,975,998.60-629,963,997.90-258,508,913.80

Finding the Fourth Proportional to 419,975,998.60, 629,963,997.90 and 258,508,913.80

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Solution

The fourth proportional to 419,975,998.60, 629,963,997.90 and 258,508,913.80 is: 387,763,370.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,975,998.60 : 629,963,997.90 = 258,508,913.80 : x
  2. Step 2: Convert to fraction form
    419,975,998.60/629,963,997.90 = 258,508,913.80/x
  3. Step 3: Cross multiply
    419,975,998.60x = 629,963,997.90 × 258,508,913.80
  4. Step 4: Simplify right side
    419,975,998.60x = 162,851,308,830,234,496
  5. Step 5: Solve for x
    x = 162,851,308,830,234,496/419,975,998.60
  6. Step 6: Final answer
    x = 387,763,370.70

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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.