Home / 419,909,814.60-629,864,721.90-247,297,777.80

Finding the Fourth Proportional to 419,909,814.60, 629,864,721.90 and 247,297,777.80

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Solution

The fourth proportional to 419,909,814.60, 629,864,721.90 and 247,297,777.80 is: 370,946,666.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,909,814.60 : 629,864,721.90 = 247,297,777.80 : x
  2. Step 2: Convert to fraction form
    419,909,814.60/629,864,721.90 = 247,297,777.80/x
  3. Step 3: Cross multiply
    419,909,814.60x = 629,864,721.90 × 247,297,777.80
  4. Step 4: Simplify right side
    419,909,814.60x = 155,764,146,040,484,992
  5. Step 5: Solve for x
    x = 155,764,146,040,484,992/419,909,814.60
  6. Step 6: Final answer
    x = 370,946,666.70

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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.