Home / 419,904,798.60-629,857,197.90-408,567,390.60

Finding the Fourth Proportional to 419,904,798.60, 629,857,197.90 and 408,567,390.60

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Solution

The fourth proportional to 419,904,798.60, 629,857,197.90 and 408,567,390.60 is: 612,851,085.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,798.60 : 629,857,197.90 = 408,567,390.60 : x
  2. Step 2: Convert to fraction form
    419,904,798.60/629,857,197.90 = 408,567,390.60/x
  3. Step 3: Cross multiply
    419,904,798.60x = 629,857,197.90 × 408,567,390.60
  4. Step 4: Simplify right side
    419,904,798.60x = 257,339,111,796,630,816
  5. Step 5: Solve for x
    x = 257,339,111,796,630,816/419,904,798.60
  6. Step 6: Final answer
    x = 612,851,085.90

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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.