Home / 419,904,518.40-629,856,777.60-396,095,961.60

Finding the Fourth Proportional to 419,904,518.40, 629,856,777.60 and 396,095,961.60

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Solution

The fourth proportional to 419,904,518.40, 629,856,777.60 and 396,095,961.60 is: 594,143,942.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,518.40 : 629,856,777.60 = 396,095,961.60 : x
  2. Step 2: Convert to fraction form
    419,904,518.40/629,856,777.60 = 396,095,961.60/x
  3. Step 3: Cross multiply
    419,904,518.40x = 629,856,777.60 × 396,095,961.60
  4. Step 4: Simplify right side
    419,904,518.40x = 249,483,725,993,749,376
  5. Step 5: Solve for x
    x = 249,483,725,993,749,376/419,904,518.40
  6. Step 6: Final answer
    x = 594,143,942.40

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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.